Anita Hardon, P. Boonmongkon, P. Streefland, M. L. Tan
Het Spinhuis, 2001
Buku Teks
Chatburn, Robert L., author
Jones & Bartlett Learning, 2011
Buku Teks
Brown, Brian, author
Open University Press, 2003
Buku Teks
Porter-O`Grady, Tim, author
Mosby, 1998
Buku Teks
Munro, Barbara Hazard, author
Lippincott Williams & Wilkin , 2005
Buku Teks