Daniels, Tom D.
McGraw-Hill, 1997
Buku Teks
Ablex Publishing Corporations, 1994
Buku Teks
edited by Linda L. Putnam, Michael E. Pacanowsky
Sage, 1983
Buku Teks
Tortoriello, Thomas R.
MaGraw-Hill , 1978
Buku Teks
Machin, John L.J., author
McGraw-Hill, 1980
Buku Teks