Stockman, Oski
Mosby Year Book, 1991
Buku Teks
by Denise M. Goodman ... [and others]
Mc Graw Hill Medical, 2007
Buku Teks
Broyles, Bonita E.
Thomson Delmar Learning , 2006
Buku Teks
Foreign and Commonwealth Office
Her Majesty's Stationery Office, 1986
Buku Referensi
The Straits Times Press, 1971
Buku Teks