Canfield, Jack, 1944-, author
Gramedia, 2003
Buku Teks
Partow, Donna
Zondervan Publishing house, 1998
Buku Teks
Canfield, Jack, 1944-, author
Gramedia Pustaka Utama, 2004;2004;2004;2004;2004
Buku Teks
Banner, Michael
Cambridge Unuversity Press , 1999
Buku Teks
Maxwell, John C., author
Menuju Insan Cemerlang (MIC), 2014
Buku Teks