[Publisher not identified], [Date of publication not identified]
Naskah
Mas Harjawiraga
Budi Utama, 1928
Buku Klasik
Philip Kotler...[et al]
Prentice-Hall, 1996
Buku Teks SO
edited by Simon P. Anderson, Joel Waldfogel, David Strömberg
Elsevier, 2016
Buku Referensi
Hahn, Fred E., 1925-
Grasindo , 1999
Buku Teks SO