by Prof. Dr. dr. H. Dadang Hawari, Psikiater $7.00
by WK $13.00
by Dr. Soegeng Santoso, M.Pd dan Dra. Anne Lies Ranti., M.Pd $9.00
by Thompson Susa $12.00
by WK $11.00
by Jan Takasihaeng $7.00