Alran Ferdinal, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1993
UI - Tesis (Membership)
Levenbach, Hans, author
Lifetime Learning Publications, 1981
Buku Teks
Hanke, John E., author
Pearson - Prentice Hall, 2009
Buku Teks
Grangen, Clive William John, 1934-, author
Academic Press, 1989
Buku Teks
Nikolopoulus, Kostasi I., author
Wiley, Hoboken, NJ, 2019
Buku Teks