Rice, Pranee Liamputtong, author
Oxford University Press, 1999
Buku Teks
edited by Ann Bowling, Shah Ebrahim
Open University Press, 2007
Buku Teks
Jacobsen, Kathyn, author
Jones & Bartlett Learning, 2012
Buku Teks
Grbich, Carol, author
Allen and Unwin, 1999
Buku Teks
DePoy, Elizabeth, author
Mosby, 1998
Buku Teks