Metcalf, L. E., De Boer, J. J., & Kaulfers, W. V. (1966). Secondary education: A textbook of readings. Allyn and Bacon.
Citace podle Chicago (17th ed.)Metcalf, Lawrence E., John James De Boer, a Walter Vincent Kaulfers. Secondary Education: A Textbook of Readings. Boston: Allyn and Bacon, 1966.
Citace podle MLA (8th ed.)Metcalf, Lawrence E., et al. Secondary Education: A Textbook of Readings. Allyn and Bacon, 1966.
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