Fryman, Mark a.
Delmar/Thomson Learning, 2002
Buku Teks SO
Chang, Richard Y.
American Society for Training & Development Press, 2000
eBooks
Harrington, H. James
McGraw-Hill, 1987
Buku Teks SO
Hugo Wibowo Haryoseno
Fakultas Teknik Universitas Indonesia, 2018
UI - Skripsi Membership
Dahlgaard, Jens J.
Chapman & Hall, 1998
Buku Teks