Deglin, Judith Hopfer, 1950-
F.A. Davis, 1997
Buku Referensi
Vallerand, April Hazard
F.A.Davis Company, 2014
Buku Teks
Deglin, Judith Hopfer, 1950-
F.A. Davis , 2005
Buku Referensi
Hodgson, Barbara B.
Saunders Elsevier, 2009
Buku Referensi
Shannon, Margaret T.
Prentice-Hall, 2001
Buku Referensi