[edited by] William E. Thompson, Jack E. Bynum
Allyn and Bacon, 1991
Buku Teks
Jacob, Herbert, 1933-, author
Litle, Brown, 1978
Buku Teks
Trojanowicz, Robert C., 1941-, author
Prentice-Hall, 1992
Buku Teks
Pine Forge Press, 1996
Buku Teks
Sellin, Thorsten, author
Wiley Eastern Private Limited, 1970
Buku Teks