by Husein Umar $11.00
by Anand Krishna $7.00
by Yori Antar, Raudia K., dkk $33.00
by Siti Marjam $9.00
by Darmadi Durianto, Sugiarto, Tony Sitinjak $7.00
by John M. Ortiz, Ph.D. $9.00
by Ir. Rustam Hakim, M.T., IALI $9.00
by Dr. Khalid Abu Syadi $5.00
by ILT Learning $5.00
by Stephens Speight $5.00
by Kavita Daswani $7.00
by Dr. Rhenald Kasali $28.00