Maxwell, John C., author
MIC (Menuju Insan Cemerlang), 2016
Buku Teks
Maxwell, John C., author
Menuju Insan Cemerlang, 2016
Buku Teks
Siregar, Evendhy M.
Yayasan Mari Belajar, 1990
Buku Teks
O`Leary, Elizabeth, author
Andi, 2002
Buku Teks
Arvan Pradiansyah, author
Gramedia, 2005
Buku Teks