Taylor, A. E. (Alfred Edward), 1869-1945, author
Doubleday, 1952
Buku Teks
Ulam, Adam Bruno, author
Beacon Press, 1973
Buku Teks
Herskovits, Melville J. (Melville Jean), 1895-1963, author
Alfred A. Knopf, 1967
Buku Teks
Thorndike, Edward Lee
Harvard University Press, 1943
Buku Teks
Taylor, A.E. (Alfred Edward), 1869-1945, author
University Paperbacks, 1960
Buku Teks