Pequot Press, 1991
Buku Teks
Gaskin, Catherine
Glasgow: Thomas Nelson and Sons, 1993
Buku Teks
Franklin, Miles, author
Angus & Robertson Publishers, 1980
Buku Teks
Mahathir bin Mohamad, 1925-, author
MPH Group Publishing, 2010
Buku Referensi
Walker, Kath
The Jacaranda Press, 1981
Buku Teks