Hook, Sidney
Religion in a free society / Sidney Hook
University of Nebraska Press , 1967
 Buku Teks SO
Olmstead, Clifton E.
History of religion in the United State
Prentice-Hall, 1960
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Regan, William B.
Foundations of American education
Harper & Row, 1970
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Bestor, Arthur
The restoration of learning: a program for redeeming the unfulfilled promise of American education
Alfred A. Knopf, 1956
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Handbook of developmental education
edited by Robert M. Hashway
Praeger, 1990
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