by Gittinger, J. Price $9.00
by Drs. Andi Baso Mappatato, M.A. $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by - $11.00
by Nurudin $9.00
by Prof. J. Suprapto, M.A. APU $11.00
by Agus Setiawan $12.00
by $11.00
by Julian Benda $6.00
by MUHAMMAD MUHYIDIN $6.00