DeMarco, Tom
Dorset House Publishing, 1999
Buku Teks
Meyer, Peter
American Management Association, 2000
Buku Teks
McGraw-Hill , 1986
Buku Teks
Bacon, Terry R., 1947-
American Management Association;, 2003
eBooks
Aliya Salsabila, author
Fakultas Psikologi Universitas Indonesia, 2018
UI - Skripsi (Membership)