edited by Mary Irwin
American Council on Education, 1956
Buku Teks
Millett, John D., author
New York, N.Y. Columbia University Press 1956,
Buku Teks
Millet, John D.
Columbia Univ. Press , 1952
Buku Teks
Miller, Leonard S., author
Carnegic Commision on Higher Education, 1975
Buku Teks
Washington U.S. Department of Health, Education, and Welfare 1955
Buku Teks