by Ir. Jarot Wijanarko $9.00
by Darmadi Durianto, Sugiarto, dkk $7.00
by Prof. Dr. S.C. Utami Munandar $11.00
by Anand Krishna $11.00
by Jack Canfield & Mark Victor Hansen $16.00
by M.H. Wancik $7.00
by Ir. Rahmat Rukaman, MBA & Hj. Yuyun $6.00