Adler, Mortimer Jerome, 1902-2001, author
iPublishing, 2007
Buku Teks
Rowe, Alan J., author
Macmillan, 1992
Buku Teks
Nicosia, Francesco M.
Prentice-Hall, 1968
Buku Teks
Nadira Rae Anjani, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2023
UI - Skripsi (Membership)
editor by. James A. Maxwell
The Reader's Digest Association Inc., 1984
Buku Referensi