Raiffa, Howard, 1924-2016, author
Addison-Wesley, 1970
Buku Teks
Sihotang, Mario Enrico, author
Fakultas Psikologi Universitas Indonesia, 2018
UI - Skripsi (Membership)
Artikel Jurnal
Moody, Paul E.
McGraw-Hill, 1983
Buku Teks
S. Prajudi Atmosudirdjo, author
Ghalia Indonesia, 1974
Buku Teks