by Halimuddin, S.H $7.00
by Prof. Dr. Husaini Usman, M.Pd & R. Purnomo Setiady Akbar, S.Pd., M.Pd $11.00
by Drs. H. Malayu S.P. Hasibuan $11.00
by Drs. Ajat Sudrajat $7.00
by Institut Dayakologi $12.00
by Richard Whiteley $7.00