by Supranto, J. $7.00
by Drs. Syafi'in Mansur $6.00
by Glenn A. Welsch, dkk $22.00
by Denise Lardner $9.00
by Freddy Rangkuti $11.00
by Budi Agus Riswandi $7.00
by Adiwarman A. Karim $13.00