McClelland, David Clarence, author
Cambridge University Press, 1987
Buku Teks
edited by Chalmers L. Stacey and Manfred F. DeMartino
Howard Allen, 1958
Buku Teks
Atkinson, John W., author
D. Van Nostrand, 1978
Buku Teks
edited by David C. McClelland
Appleton Century Crofts, 1955
Buku Teks
Reeve, Johnmarshall, author
John Wiley & Sons, Inc., 2015
Buku Teks