Hatt, John
Pan Books, 1982
Buku Teks
editor, Cecil Turner
Best Western, 1980
Buku Referensi
Eagan, Angela, author
Marshall Cavendish, 2007
Buku Teks
Dept. of Information Malaysia , 2005.
Buku Teks
Bahamman, Fahad Salim, author
Pustaka Al-Kautsar , 2012
Buku Teks