by Victor Situmorang, S.H $6.00
by Alwi Alatas $7.00
by Andi Muawiyah Ramly $6.00
by - $11.00
by Prof. Dr. Suharsimi Arikunto $7.00
by - $12.00
by $16.00
by Cernea. Michael M $9.00
by Drs. Mardalis $6.00
by Ir. Sujamto $6.00
by Dr. Muh. Fahd Ats-Tsuawaini $5.00
by J. Donald Walters $5.00