APA (7th ed.) Citation

Goddard, M., Camp, L. S., & Lycan, E. H. (1939). American English. J.B. Lippincott.

Chicago Style (17th ed.) Citation

Goddard, Mabel, Louise Schafer Camp, and Eva Hanks Lycan. American English. Chicago: J.B. Lippincott, 1939.

MLA (8th ed.) Citation

Goddard, Mabel, et al. American English. J.B. Lippincott, 1939.