Afrida Maharani Timala, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2012
UI - Skripsi (Open)
Ambrose, Peter
Penguin Books,, 1975
Buku Teks
Rizki Kumoro Setiadi, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2015
UI - Skripsi Membership
Dipasquale, Denise, author
Prentice-Hall, 1996
Buku Teks
Tempelmans Plat, Herman, author
Butterworth-Heinemann, 2001
Buku Teks