Iman Supriyono
SNF Consulting, 2008
Buku Teks
Rambat Lupiyoadi, author
Salemba Empat, 2019
Buku Teks
Muhammad Tamar, author
2007
UI - Disertasi (Membership)
Kao, Raymond W.Y.
Prentice-Hall, 1995
Buku Teks
Halawa, Ohiao, author
Jakarta : Nyiur Indah Alam Sejati, 1992,
Buku Referensi