Spencer, H., & Kazamias, A. M. (1966). Herbert Spencer on education. Teachers College Press, Teachers College, Columbia University.
Citace podle Chicago (17th ed.)Spencer, Herbert, a Andreas M. Kazamias. Herbert Spencer on Education. New York: Teachers College Press, Teachers College, Columbia University, 1966.
Citace podle MLA (8th ed.)Spencer, Herbert, a Andreas M. Kazamias. Herbert Spencer on Education. Teachers College Press, Teachers College, Columbia University, 1966.
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