Gaya APA

LEVENBACH, H., CLEARY, J, P. (1981). THE BEGINNNG FORECASTER the forecasting process through data analysis . CALIFORNIA: LIFETIME LEARNING PUBLICATION.

Gaya MLA

LEVENBACH, HANS., CLEARY, JAMES, P.. "THE BEGINNNG FORECASTER the forecasting process through data analysis". CALIFORNIA: LIFETIME LEARNING PUBLICATION, 1981. Art Original.