Issel, L. Michele
Jones and Barlett Publ., 2004
Buku Teks
Dignan, Mark B.
Lea & Febiger, 1981
Buku Teks SO
Waltner-Toews, David, 1948-
Cambridge University Press, 2004
Buku Teks SO
McMurray, Anne
Mosby , 2003
Buku Teks
Dever, G.E. Alan
Aspen Systems, 1980
Buku Teks