by Prof. Dr. Nur Nasry Noor, M.P.H $6.00
by Dr. Ibrahim Bafadal, M.Pd $6.00
by Drs. R. Martino $6.00
by Prof. Mr. Roeslan Saleh $5.00
by Walker, Edward L $6.00
by Drs. Abdul Chaer dan Leonie Agustina $11.00