Fox, William M
Jossey Bass, 1987
Buku Teks
Briggs, William, author
Society for Industrial and Applied Mathematics, 2005
eBooks
Hodnett, Edward
Harper & Brothers, 1955
Buku Teks
Widyatmiko Adhi Pradhana, author
Fakultas Psikologi Universitas Indonesia, 2014
UI - Tesis (Membership)
Pokras, Sandy, author
Kogan Page, 1990
Buku Teks