Strickland, Carol, author
Andrews McMeel, 2001
Buku Teks
Edwards, Clive, author
Page One, 2009
Buku Referensi
Mansfield, Richard, author
Elex Media Komputindo, 2002
Buku Teks
Yelni Rahmawati, author
2013
UI - Tesis (Membership)
Mpshkovitz, Moshe, author
Focal Press, 2000
Buku Teks