APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Koos, Leonard V., et al. Administering the Secondary School. American Book Co., 1940.