Anggleton, Peter, Chase, Elaine, Rivers, Kim, Toft, Marlyn, Tyrer, Paul, Warwick, Ian, Whitty, Geoff
Churchill Livingstone , 1994
Buku Referensi
Adji Dharma, translator
Arcan, 1993
Buku Referensi
Aggleton, Peter
London : Churchill Livingstone Inc., 1994,
Buku Referensi
Liliana Sugiharto, author
Universitas Atmajaya (PUAJ), 2006
Buku Teks
Willis, Marjorie Canfield, author
J.B. Lippincott, 2008
Buku Teks