Swaaningen, Rene van, author
Sage, 1997
Buku Teks
Schwartz, Martin D., author
Anderson , 2003
Buku Teks
Adler, Freda, author
McGraw-Hill, 1998
Buku Teks
Adler, Freda, author
McGraw-Hill, 1991
Buku Teks
Vito, Gennaro F., author
Wadsworth, 1994
Buku Teks