by Heryanto $5.00
by J. Donald Walters $3.00
by Prof. H.M. Arifin, M.Ed $7.00
by Totok Semartho Wiryasaputra $6.00
by Ir. M. Lies Suprapti $6.00
by Edy Soatanto, N, BE $5.00
by Kelompok Studi Hukum Bisnis Fakultas Hukum Unpad $7.00