Longest, Beaufort B., author
Appleton and Lange, 1996
Buku Teks
Porter-O`Grady, Tim, author
Mosby Elsevier, 2011
Buku Teks
Barr, Jill, author
Sage , 2012
Buku Teks
Goldsmith, Seth B., author
An Aspen, 1981
Buku Teks
edited by Gary E. Day and Sandra G. Leggat
Cambridge University Press, 2015
Buku Teks