Fakultas Ekonomi dan Bisnis Universitas Indonesia, -
UI - Skripsi (Membership)
Gotz, Dieter, author
Langenscheidt, 1993
Buku Referensi
Kuyper, Eric de, author
SUN, 1992
Buku Teks
Somers, Jan A., author
Gouda Quint, 2001
Buku Teks
Scharten-Antink, Carel, author
Querido, 1959
Buku Teks