by Drs. Slameto $7.00
by Dra. Nurul Zuriah, M.Si $11.00
by Drs. Ary H. Gunawan $11.00
by Prof. Dr. S. Nasution, M.A. $6.00
by Munandar. S.C. Utami (Ed) $5.00
by DR. Soekidjo Notoatmodjo $7.00