Kaplan, Howard B., author
Sage Publications, 1984
Buku Teks
Eldefonso, Edward
John Wiley , 1983
Buku Teks
Rubin, Sol, author
Oceanea Publication, 1970
Buku Teks
Arnold, William R.
Houghton Mifflin, 1983
Buku Teks
Simanjuntak, B., author
Alumni Bandung, 1979
Buku Teks