Hickman, Craig R.
New American Library, 1984
Buku Teks
Ario Rahadhi
Fakultas Teknik Universitas Indonesia, 2021
UI - Tesis Membership
Baird, Lloyd S.
Business One Irwin, 1992
Buku Referensi
Arif Rohman Khakim
2016
UI - Skripsi Membership
Pioniarita Feriarsi
Fakultas Psikologi Universitas Indonesia, 2014
UI - Tesis Membership