Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2001
UI - Skripsi Membership
by Dale H. Besterfield ... [and others]
Prentice-Hall, 1995
Buku Teks
Bank, John
Prentice-Hall, 2000
Buku Teks
Fandy Tjiptono
Andi Offset, 1996
Buku Teks
Rahmat Tisnawan
Fakultas Teknik Universitas Indonesia, 2005
UI - Tesis Membership