by Nursalam $7.00
by Dr. William Hendricks $6.00
by Aziz Alimul $9.00
by Prof. Drs. S. Pamudji, M.P.A $11.00
by Prof. Dr. dr. Sarwono Waspadji, SpPD-KEMD $9.00
by Drs. Solichin Abdul Wahab, M.A $7.00
by Suwarno $7.00