Vanty Triadha Rini
Universitas Indonesia, 2005
UI - Skripsi Membership
Armstrong, Michael
Kogan Page Limited, 1995
Buku Referensi
Dudek, Susan G.
J.B. Lippincott, 1997
Buku Teks SO
Karb, Virginia Burke
Mosby , 1996
Buku Teks SO
Association for Investment Management and Research, 1992
Buku Teks