Ziglar, Zig, author
Tian xia wen hua chu ban gu fen you xian gong s, 1995
Buku Teks
Ziglar, Zig, author
Heinemann Asia, 1995
Buku Teks
Ray, James Arthur, author
Gramedia Pustaka Utama, 2009
Buku Teks
Ziglar, Zig, author
Binarupa Aksara, 1995
Buku Teks
Waitley, Denis, author
Binarupa Aksara, 1994
Buku Teks