Dossat, Roy J.
Prentice-Hall International, Inc., 1991
Buku Teks
Dossat, Roy J.
Prentice-Hall International, Inc., 1997
Buku Teks
M. Shiddiq Manti
1998
UI - Skripsi Membership
Elida M.R. Malik
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1987
UI - Skripsi Membership
Krishnan, R
Upper Saddle River, N.J Prentice-Hall 2001,
Buku Teks