Bowman, Edward H., author
Richard D. Irwin, 1958
Buku Teks
Kim, Chaiho, author
Addison-Wesley, 1976
Buku Teks
Rutledge, William A., author
Holt, Rinehart & Winston, 1963
Buku Teks
Novita Nuraini, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia , 2017
UI - Skripsi (Membership)
Roff, Derek A.
Chapman & Hall, 1992
Buku Teks