by Dr. W. Herdin Sibuea., dkk $7.00
by Wahyuni Mulyawati & Ilse Harahap $6.00
by H. PROF. DR. AFIF MUHAMMAD, M.A. $20.00
by Nalbandov, A.V $7.00
by Tarwoto $9.00
by Agus Sunyoto $11.00
