APA Citatie

Keller, D. P., & Thrush, E. A. (1987). Interactions 1: A speaking activities book. New York: Random House.

Chicago Style citaat

Keller, Deborah Poole, en Emily Austin Thrush. Interactions 1: A Speaking Activities Book. New York: Random House, 1987.

MLA citatie

Keller, Deborah Poole, en Emily Austin Thrush. Interactions 1: A Speaking Activities Book. New York: Random House, 1987.