Cohen, Barbara Janson
Lippincott Williams & Wilkins, 2005
Buku Teks
Swisher, Linda
Mosby , 2010
Buku Teks
Winston, Robert
BBC Worldwide Limited, 2004
Multimedia
Shambhala, 1999
Buku Referensi
Roojen, Pepin van, compiler
Pepin van Roojen, 1999
Multimedia