Strong, Robert A
Thomson/South-Western, 2006
Buku Teks
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2000
UI - Skripsi Membership
Farrell, James L.
McGraw-Hill, 1997
Buku Teks
Rahmad Kaslani
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2004
UI - Tesis Membership
Hutauruk, Martin Natanael
Universitas Indonesia, 2000
UI - Tesis Membership