Bent, R. K., Kronenberg, H. H., & Boardman, C. C. (1966). Principles of secondary education (5th ed.). McGraw-Hill.
Citace podle Chicago (17th ed.)Bent, Rudyard Kipling, Henry Harold Kronenberg, a Charles C. Boardman. Principles of Secondary Education. 5th ed. New York: McGraw-Hill, 1966.
Citace podle MLA (8th ed.)Bent, Rudyard Kipling, et al. Principles of Secondary Education. 5th ed. McGraw-Hill, 1966.
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