Dyche`, Jill, author
Addison-Wesley, 2002
Buku Referensi
Warniancy Ariesty, author
Business School Universitas Pelita Harapan, 2018
Artikel Jurnal
Zulianti Syahruriza, author
Universitas Indonesia, 2015
UI - Tesis (Membership)
Henn, Stephen K., author
Wiley, 2009
Buku Teks
Craig, Harold Farlow, author
The Law Book, 1979
Buku Teks