APA Style
Sukanto, R, ,.
(1989).
Business forecasting, bag.I
.
Yogyakarta:
BPFE-Yogyakarta.
MLA Style
Sukanto, Reksohadiprodjo, ,.
"Business forecasting, bag.I".
Yogyakarta:
BPFE-Yogyakarta,
1989.
Text.