APA (7th ed.) Citation

Lefcourt A. and others & H. Th. Fillmer, A. L. N. C. T. (1980). American book english. American book company.

Chicago Style (17th ed.) Citation

Lefcourt A. and others and A. Lefcourt. N. C. Thompson H. Th. Fillmer. American Book English. New York: American book company, 1980.

MLA (8th ed.) Citation

Lefcourt A. and others and A. Lefcourt. N. C. Thompson H. Th. Fillmer. American Book English. American book company, 1980.