APA (7th ed.) Citation

FILLMER, H. T., LEFCOURT, A., & THOMPSON, N. C. (1980). American book English. American Book Co.

Chicago Style (17th ed.) Citation

FILLMER, H. Thompson, Ann LEFCOURT, and Nell C. THOMPSON. American Book English. New York: American Book Co, 1980.

MLA (9th ed.) Citation

FILLMER, H. Thompson, et al. American Book English. American Book Co, 1980.