Farbey, A.D., author
Crest Publishing House, 2001
Buku Teks
Randall, Geoffrey, author
Crest Publishing House, 2001
Buku Teks
Morse, Stephen A., author
Crest Publishing House, 2001
Buku Teks
Kartajaya, Hermawan, author
Mizan, 2006
Buku Teks
Lancaster, Greoff, author
Crest, 2001
Buku Teks