Hoare, James E., author
Kuperard, 2006
Buku Referensi
Chew, Sally
Times Books International, 1995
Buku Teks
Vegdahl, Sonja, author
Marshall Cavendish, 2005
Buku Teks
London Ward, Lock [t.th.]
Buku Teks
Vegdahl, Sonja, author
Marshall Cavendish Editions, 2005
Buku Teks