by Niccolo Machiavelli $6.00
by Adler Haymans Manurung $7.00
by Dra. Sutratinah Tirtonegoro $7.00
by Drs. Muchdarsyah Sinungan $7.00
by Drs. Firman B. Aji dan Drs. Martin Sirait $9.00
by ISEI $25.00
by $13.00
by Toelihere, Mozes R & Yuhara Sukra $5.00
by F. Suryatmo $6.00
by Thomas R. Baechle $7.00
by Aziz Alimul $9.00
by Tim Puspa Swara $6.63