Manajemen Usahawan Indonesia, XXXII (03) Maret 2003: 3-8, 2003
Artikel Jurnal
Rothery, Brian, author
Pustaka Binaman Pressindo, 1996
Buku Teks
Hutchins, Greg, author
Oliver Wright Publications, 1994
Buku Referensi
Goetsch, David L., author
Prentice-Hall, 2002
Buku Teks
Djoni Bagy, author
Fakultas Teknik Universitas Indonesia, 2002
UI - Tesis (Membership)