Enelow, Wendy S., author
JIST Works, 2004
Buku Teks
Bennett, Scott, author
American Management Association, 2005
eBooks
Muhammad Ridwan, author
Fakultas Teknik Universitas Indonesia, 2000
UI - Skripsi (Membership)
Amir M.S., author
Pustaka Binaman Pressindo, 2003
Buku Teks
Amelia Djamaoeddin, author
Universitas Indonesia, 2004
UI - Tesis (Membership)