Enger, Eldon D.
McGraw-Hill Higher Education, 2004
Buku Referensi
Arms, Karen
Saunders College Publishing, 1990
Buku Teks
Masters, Gilbert M.
Prentice-Hall, 2008
Buku Teks
Cunningham, William P.
WCB/McGraw-Hill, 1999
Buku Referensi
Sinung Rahardjo
Program Pascasarjana Universitas Indonesia, 2004
UI - Tesis Membership