Koos, L. V., Hughes, J. M., Hutson, P. W., & Reavis, W. C. (1940). Administering the secondary school. American book company.
Citace podle Chicago (17th ed.)Koos, Leonard Vincent, James Monroe Hughes, Percival W. Hutson, a William Claude Reavis. Administering the Secondary School. New York, Cincinnati [etc.]: American book company, 1940.
Citace podle MLA (9th ed.)Koos, Leonard Vincent, et al. Administering the Secondary School. American book company, 1940.
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