Bretz, Rudy
Sage, 1983
Buku Teks
Fakultas Teknik Universitas Indonesia, 1994
UI - Skripsi (Membership)
Johansen, Robert
McGraw-Hill , 1984
Buku Teks
Wilson, Shauna
American Management Association, 2009
eBooks
Sursina
Fakultas Teknik Universitas Indonesia, 2006
UI - Tesis (Membership)