(1974). Business Forecasting Vol.i Latar Belakang Theoritis Gunawan Adisaputro [dkk]. FE-UGM.
Chicago Style aipamenaBusiness Forecasting Vol.i Latar Belakang Theoritis Gunawan Adisaputro [dkk]. FE-UGM, 1974.
MLA aipamenaBusiness Forecasting Vol.i Latar Belakang Theoritis Gunawan Adisaputro [dkk]. FE-UGM, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.