by Malvino $20.00
by Koestoer, Raldi Hendro $6.00
by Swasono, Sri-Edi, & Masri Singarimbun (Ed) $7.00
by Sukim Prayitno & Tri Susanto $6.00
by Ir. Heinz Frick & Moediartianto $7.00
by Thabrani $13.00
by Barry Wollard $11.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Veithzal Rivai $16.00
by Drs. H. Ahmad Wardi Muslich $9.00
by Muhammad Ahmad Asyur $5.00
by Ahmad Syarifuddin $9.00