Standing Conference of Principals
Colleges & Institutes of Higher Education (1988 Guide)
Standing Conference of Principals, 1987
 Buku Referensi
Leach, John, 1953-
Running applied psychology experiments
Open University Press, 1991
 Buku Teks
Weinig, Arthur J.
Technical methods of ore analysis for chemist and colleges
John Wiley & Sons, 1939
 Buku Teks SO
Snedecor, George W.
Statistical methods, applied to experiments in agriculture and biology
The Iowa State University Press, 1964
 Buku Teks
United Nations. International Crime and Justice Research Institute
A World directory of criminological institutes
UNICRI, 1995
 Buku Referensi