by Clive Gray, Payaman Simanjuntak, dkk $12.00
by Dr. H. Abuddin Nata, MA $6.00
by Jamal $7.00
by K.H. Zainal Arifin Djamaris $6.00
by Donald J. Bawersok $12.00
by Akhmad Fauzi, Ph.D. $12.00
by M.L. Jhingan $13.00
by WK $11.00