Y. C. Tri Suwarni
Penerbitan Universitas Atma Jaya, 1991
Buku Teks
Ery Rustiyanto, author
Gosyen Publishing, 2010
Buku Teks
Davis, Gordon B., author
Jakarta, Pustaka Binaman Pressindo, 1999, 1999
Buku Teks
Yuniarto Nurwono, author
Elex Media Komputindo, 1994
Buku Teks
Aria WN, author
Universitas Indonesia, 2007
UI - Skripsi (Membership)