by Stallings $18.00
by Prof. Dr. dr. Pinardi Hadidjaja, MPH & TM $5.00
by Prof. Subowo, dr. M.Sc., Ph.D $9.00
by Wasitaatmadja, Sjarif M $6.00
by S. Soegijanto $11.00
by Syaifuddin $12.00