by Prof. Soetjipto dan Drs. Raflis Kosasi, M.Sc $9.00
by - $11.00
by Y. Bambang Mulyono $5.00
by Drs. H.A.S. Moenir $9.00
by DR. Farida Yusuf Tayibnapis, M.Pd $7.00
by Sudarwan Danim $7.00
by K.H.D. Zawawi Imron $6.00