Straus
LPPM, 1987
Buku Teks
Melisya Caterina Fazrin
Fakultas Psikologi Universitas Indonesia, 2013
UI - Tesis (Membership)
Ott, J. Steven
Thomson Wadsworth, 2008
Buku Teks
Listya Diani Pramudyaningtias
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
UI - Tesis (Membership)
McConnell, Charles R.
Jones & Bartlett Learning, 2013
Buku Referensi