Morris, Lynn Lyons, author
Sage, 1985
Buku Teks
Henerson, Marlene E., author
Sage, 1986
Buku Teks
Morris, Lynn Lyons, author
Sage, 1987
Buku Teks
Gronlund, Norman E.
Allyn and Bacon, 1995
Buku Teks
by David C. McClelland ... [and others]
Appleton-Century-Crolts, 1953
Buku Teks