edited by Linda L. Putnam, Michael E. Pacanowsky
Sage, 1983
Buku Teks
Machin, John L.J., author
McGraw-Hill, 1980
Buku Teks
O`Hair, Dan, author
Kencana, 2009
Buku Teks
Myers, Michele Tolela, author
McGraw-Hill, 1982
Buku Teks
Tortoriello, Thomas R.
MaGraw-Hill , 1978
Buku Teks