by Adler Haymans Manurung $6.00
by Depdikbud $6.00
by Hermawan Kartajaya $11.00
by Sugiarto, dkk $16.00
by Hendri F. Isnaeni $4.32
by Dra. Moeslichatoen R., M.Pd $7.00
by Drs. Soemarso, S.R $18.00