John Gawa, author
Kompas, 2004
Buku Teks
Mohd. Tarmizi Kamzon, author
Perpustakaan Negara Malaysia, 2008
Buku Referensi
Mouzon, Stephen A., author
McGraw-Hill , 2001
Buku Teks
Chaidir, author
Adicita Karya Nusa, 2004
Buku Teks
Nelson, Bob, author
Workman Publishing Company, 1994
Buku Teks