American Psychological Association (APA) style provides a simple template for book citations. When you cannot locate the publisher name or location for a book you are citing, note this with a small substitution in your citation.
Basic APA Style
The basic APA formatting for a book citation is as follows:
Author Lastname, Author First Initial(s). (Publication Year). Title of work: Subtitle if applicable. Location: Publisher.
Veitch, R. (2006). Can't Get No. New York, NY: DC Comics.
Substitutions for Missing Info
If you cannot locate publisher location or information when you are writing the citation for a book, replace this missing info with "(n.p.)":
Vargas, L. S. (2007). Metagame: Perspectives and theories. (n.p.): Upper Deck.
Kuma, S. (1995). Thieves, rogues, and scoundrels. New Orleans, LA: (n.p.).
If you are missing both publisher location and publisher name, simply replace the entire section:
Georges, I. (1985). Forester's almanac. (n.p.).