Comments on publications are becoming increasingly commonplace. With this new avenue for critical commentary on the literature, you may need to cite a comment in a paper or manuscript. Take for example this comment left in PubMed.
Use following elements where applicable:
Author AA. Title of the paper [Title of the forum]. Title of the Journal Abbreviated. Year; volume(issue). URL. Published Month, Day, Year. Updated Month, Day, Year. Accessed Month, Day, Year.
Use following elements where applicable:
Author, A. A. (Year). Title of the comment. [Peer commentary on the paper "Title of the original paper" by B. Author]. URL
There are two types of conference materials that you may be interested in citing: Presented papers/posters and proceedings. The key difference between the two is that proceedings are published, typically in a journal.
Use following elements where applicable:
Presented paper/poster: Author AA, Author BB. Title of the poster or paper. Paper/Poster presented at Conference Name; Month Year; City, State Abbreviation.
Published Proceedings: Author AA, Author BB. Title of the poster or paper. Title of the Journal Abbreviated; Volume(Issue):Abstract number/Page Numbers.
Use following elements where applicable:
Presented paper/poster: Author, A. A., & Author, B. B. (Year, Month Day). Title of paper or poster [Description]. Title of Conference, Location.
Published Proceedings: Author, A. A., & Author, B. B. (Year). Title of paper or poster. Title of Proceedings, Volume, Issue, Pages-Pages. DOI or URL
For dictionaries, it is generally bad practice to cite dictionary definitions in academic papers. But you may be discussing different uses of a word, in which case, you would need to cite a dictionary. Dictionaries often have no authors present for individual entries, but generally have editors who edit the work.
Use following elements where applicable:
Entry name. In: Editors , ed(s). Title of the dictionary. Edition (if applicable). Publisher's location (city, state, or, for Canada, city, province, country, or, all others, city, country): publisher's name; year of publication and /or last update.
Use following elements where applicable:
Author, A. A. (Year). Word or title of entry. In A. Editor & B. Editor (Eds.), Title of the dictionary (ed., pp. #). Publisher. Retrieved Month Day, Year, from URL
Use following elements where applicable:
Unpublished Dissertation: Author AA. Title of dissertation [dissertation]. City: University; Year.
Use following elements where applicable:
Dissertation from a database: Author, A. A. (Year). Title of dissertation (Publication No.) [Doctoral dissertation, Name of Institution]. Name of Database.
Unpublished Dissertation: Author, A. A. (Year). Title of dissertation [Unpublished doctoral dissertation]. Name of Institution.
For databases, they can be broken down into databases with and without authors. For some databases, like UpToDate, the author(s) of the section is/are listed. You should cite the author and name the editor if available; note for UpToDate that Denise S. Basow is the editor for UpToDate so cite her rather than the section or deputy editors for the entry you are citing. For database entries without authors, you can cite the database as the author.
Use following elements where applicable:
Author(s). Title of the database [database online]. Publisher's location (city, state, or, for Canada, city, province, country, or, all others, city, country): publisher's name; year of publication and /or last update. URL [provide URL and verify that the link still works as close as possible to publication]. Accessed [date].
Use following elements where applicable:
Title of database. (n.d.). Publisher. URL
Use following elements where applicable:
Name of drug. [package insert]. Manufacturer's Location (Town, State): Manufacturer's Name; Year
Use following elements where applicable:
Manufacturer's Name. (Year). Name of drug. [package insert].