APA (7th ed.) Citation

Keller, D. P., & Thrush, E. A. (1987). Interactions I. A speaking activities book (1a. ed.). Random House.

Chicago Style (17th ed.) Citation

Keller, Deborah Poole, and Emity Austin Thrush. Interactions I. A Speaking Activities Book. 1a. ed. Nueva York: Random House, 1987.

MLA (9th ed.) Citation

Keller, Deborah Poole, and Emity Austin Thrush. Interactions I. A Speaking Activities Book. 1a. ed. Random House, 1987.