Artikel Jurnal
Monk, Kathryn A.
Periplus Editions, 1997
Buku Referensi
Erwin Arsyad, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2003
UI - Tesis Membership
M. Yamin, author
2000
UI - Tesis Membership
Habsari Ingesti Widati, author
2017
UI - Skripsi Membership