by Fajar Arifin Gunawan & Elna Kartawiguna $10.00
by Prof. dr. Peter Kabo Ph.D., dr. Sjukri Karim $7.00
by Prof. Dr. Samsuridjal Djauzi, SpPD $6.00
by Lyle W. Morgan II, Ph.D., HMD $7.00
by Katzung $30.00
by Syaifuddin $12.00