APA (7th ed.) Citation

Koos, L. V., Hughes, J. M., Hutson, P. W., & Reavis, W. C. (1940). Administering the secondary school. American book company.

Chicago Style (17th ed.) Citation

Koos, Leonard Vincent, James Monroe Hughes, Percival W. Hutson, and William Claude Reavis. Administering the Secondary School. New York, Cincinnati [etc.]: American book company, 1940.

MLA (9th ed.) Citation

Koos, Leonard Vincent, et al. Administering the Secondary School. American book company, 1940.