Snow, Edgar
Random House , 1962.
Buku Teks
Lee, Kyun-young
Jimoondang Publishing Company, 2001
Buku Teks
Datin Seri Shuryani Datuk Shuaib
Yayasan Semporna, 2011
Buku Referensi
Sheldon, Sidney
Book Club Associates, 1973
Buku Teks
Pople, Maureen
St.Lucia:University of Queenssland, 1986
Buku Teks