Kaplan, Harold I.
Williams & Wilklins , 1993
Buku Teks
Rutan, J. Scott
The Guilford Press, 2007
Buku Teks
Levine, Baruch
Prentince Hall, 1979
Buku Teks
Ettin, Mark F.
Allyn and Bacon, 1992
Buku Teks
Roberts, David L., 1973-
Oxford University Press, 2016
Buku Teks