APA (7th ed.) Citation

Amore, J., Davis, H. A., Hartshorne, R. G., & Mertz, S. M. (1939). Collaborative problem 1939b: The United States Government pavilion at a World's Fair.

Chicago Style (17th ed.) Citation

Amore, John, Harry A. Davis, Richard Gardner Hartshorne, and Stuart M. Mertz. Collaborative Problem 1939b: The United States Government Pavilion at a World's Fair. 1939.

MLA (8th ed.) Citation

Amore, John, et al. Collaborative Problem 1939b: The United States Government Pavilion at a World's Fair. 1939.