Personal Communications 35 15. Other Sources 36 16. Use of Ibid. Methods of Listing Listings may be alphabetically, by author, or serially, by order of citation. If there are multiple authors, their names should be separated by commas.
Punctuation is the same as in the first example.
A comma appears between each section of the reference, except between the page number and year of publication. Note that the comma after the title of the article is enclosed in the quotation marks, as dictated by typographical usage. One exception to the Chemical Abstracts list of abbreviations is that for A.I.Ch. The following examples derive from a Russian article first noted in Chemical Abstracts . The Original Article .