by Dr. Budi Tri Akoso $9.00
by Miftah Thoha $7.00
by Sugiarto, Dergibson Siagian, dkk $7.00
by Prof. S.H. Rewoldt, Terj. Drs. A.H. Ali $7.00
by Budi Widianarko & Andreas Pandiangan $11.00
by A. Rani Usman $20.00