Gerdunas TB, 2000
Buku Teks
Klaus Fichter, Severin Beucker, editors
[Springer, ], 2012
eBooks
Siti Hamidah Rustiana, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1983
UI - Skripsi (Membership)
Bambang Soembodo
Buku Teks
Mangani, Francesco, author
Quintessence Publishing, 2009
Buku Referensi