by Suwasono Heddy $6.00
by Ir. Mul Muyani Sutedjo $7.00
by Drs. H. Inu Kencana Syafiie $13.00
by $16.00
by Drs. Muchdarsyah Sinungan $9.00
by Drs. Syaiful Bahri Djamarah $7.00
by Taswati Suci M & Kristiyani Puspittarti $3.56