by Dergibson Siagian & Sugiarto $13.00
by dr. H. Taufiq Pasiak, M.Pd $11.00
by Susmayati, B.A., dkk $7.00
by K.H.D. Zawawi Imron $6.00
by Tamara Sheward & Michael Muc $7.00
by Jennifer Cruise $7.00
by Tina Ramli $7.00