APA (7th ed.) Citation

Boring, E. G., Langeld, H. S. 1. . . . ., & Weld, H. P. 1. . . .. (1939). Introduction to psychology. Wiley.

Chicago Style (17th ed.) Citation

Boring, Edwin Garrigues, Herbert Sidney 1879- Langeld, and Harry Porter 1877- Weld. Introduction to Psychology. New York: Wiley, 1939.

MLA (9th ed.) Citation

Boring, Edwin Garrigues, et al. Introduction to Psychology. Wiley, 1939.