Keller, D. P., & Thrush, E. A. (1987). Interactions 1: A speaking activities book. New York: Random House.
استشهاد بنمط شيكاغوKeller, Deborah Poole, و Emily Austin Thrush. Interactions 1: A Speaking Activities Book. New York: Random House, 1987.
MLA استشهادKeller, Deborah Poole, و Emily Austin Thrush. Interactions 1: A Speaking Activities Book. New York: Random House, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.