by Drs. Amin Wijaja Tunggal, M.B.A $11.00
by Prof. Dr. Suharsimi Arikunto, dkk $7.00
by Mulyono S $0.00
by John Adair $9.00
by Eriyanto $11.00
by - $9.00
by Drs. C. I. Bc. Harsono Hs IP $5.00
by $6.00
by Sujoko, Siti Mariyam $5.00
by Iman Purwanto $0.00
by S. Wibowo $13.00
by Jack Canfield & Mark Victor Hansen $11.00