by Alwi Shihab $12.00
by Ir. Doli Siregar, M.Sc., FRICS., SVC $11.00
by Septiawan Santana K. $18.00
by Gunawan Wiradi $12.00
by A.H. Manurung, S.E $6.00
by Siti Musdah Mulia $14.00