by Ir. Abbas Siregar Djarijah $6.00
by Enita Sriyana $7.00
by TEGUH IMAN PERDANA $6.00
by Prof. Dr. Veithzal Rivai, MBA $18.00
by Agus S. Gunadi $9.00
by Dr. Al. Purwa Hadiwardoyo, MSF. $4.00
by Taufik Abdullah $11.00
by Dr. Ir. Adji Sastrosupadi, MS $11.00
by Chia Haris $12.00
by Atok Sugiarto $18.00
by Dr. I. Bambang Sugiharto $7.00
by Heri Kustomo, S.Pd. $9.00