Παραπομπή σε μορφή APA (7η εκδ.)

LEVENBACH, H. (1981). The Beginning Forecaster The Forecasting Process Through Data Analysis Hans Levenbach And James P.cleary. Lifetime Learning Publications.

Παραπομπή σε μορφή Chicago (17η εκδ.)

LEVENBACH, Hans. The Beginning Forecaster The Forecasting Process Through Data Analysis Hans Levenbach And James P.cleary. Lifetime Learning Publications, 1981.

Παραπομπή σε μορφή MLA (8th εκδ.)

LEVENBACH, Hans. The Beginning Forecaster The Forecasting Process Through Data Analysis Hans Levenbach And James P.cleary. Lifetime Learning Publications, 1981.