by M. Fauzil Adhim $7.00
by Ir. Dede Juanda J.S. & Ir. Bambang Cahyono $6.00
by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $18.00
by Th. Endang Purwoastuti $6.00
by Yusuf Abdullah Daghfag $6.00
by Dr. Mulyanto $9.00