Counterpoints by Michael Cranny and Garvin Moles
Parenthetical Reference (in-text):
Cranny and Moles, Counterpoints, 42.
General format for a textbook:
AuthorLastName, First Name. Title (Italicized). City: Publisher, Publication Year.
Cranny, Michael and Garvin Moles. Counterpoints: Exploring Canadian Issues. Toronto: Pearson Education Canada, 2001
If there are more than three authors, you can use the latin term et al. (“and others”) after the first author’s name.