by Prof. C.J. Ebrahim $6.00
by Sugiarto, dkk $11.00
by Johanes Lim, Ph.D., CPC $9.00
by Kosuke Mizuno, Indrasari Tjandraningsih, Rina Herawati $31.00
by Irianto Aritonang $6.00
by Drs. Bambang Siswanto, M.A $6.00
by John Kirvan $6.00
by Julius Pour $11.00