by Soerjono Soekanto $12.00
by Hermawan Kartajaya $13.00
by Drs. Muda Markus $20.00
by Ernest Dichter $9.00
by Sprent, P. $7.00
by Prof. Drs. H. Soegyarto Mangkuatmodjo $9.00
by $30.00
by Shelly $26.00
by Muhammad Ismail $6.00
by Don WS, Cherry Hadibroto $7.00
by Soedaryo Soimin $9.00
by Bakdi Soemanto $7.00