Geyer, R. Felix, author
Pergamon Press, 1980
Buku Teks
Grammy Lusiana, author
Fakultas Psikologi Universitas Indonesia, 2023
UI - Skripsi (Membership)
Miller, James Grier, author
McGraw-Hill, 1978
Buku Teks
Olds, Linda E., author
State University of New York Press, 1992
Buku Teks
Ackoff, Russell Lincoln, 1919-, author
John Wiley & Sons, 1974
Buku Teks