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(ASA Style Guide 2014 section 4.3.1 p. 46, section 4.3.2 48, and appendix p. 105)
(Author1 Last name et al. Year of publication:Page number)
(Bottomore et al. 1982: 35)
Author1 Last name, First name, Author2 First name Last name, Author3 First name Last name, and Author4 First name Last name. Year of publication. Name of Publication (italicized). Location of publisher, state or province postal code or name of country (if a foreign publisher): Publisher’s Name.
Bottomore, T. B., Stefan Nowak, Magdalena Sokołowska, and International Sociological Association. 1982. Sociology, the State of the Art. London, England: Sage Publications.
If the author has a middle name, it is included after their first name.
If the location of the publisher is well known and clear with only the city or if the state name is included in the publisher name, the state abbreviation is not needed. This is the case for publishers in New York, Los Angeles, and Chicago.