Bond, Cecil J., author
McGraw-Hill, 1993
Buku Referensi
Segal, Lloyd M., 1948- , author
American Management Association, 2007
eBooks
Whiteside, Conon D., author
Wiley-Interscience, 1971
Buku Teks
Adams, E. Sherman, author
Ronald Press, 1950
Buku Teks
Gisela Irianti Lee, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tugas Akhir