BOLT GORDON. (2002). MARKET AND SALES FORECASTING. CREST PUBLISHING HOUSE.
Chicago (17e ed.) BronvermeldingBOLT GORDON. MARKET AND SALES FORECASTING. NEW DELHI: CREST PUBLISHING HOUSE, 2002.
MLA (9e ed.) BronvermeldingBOLT GORDON. MARKET AND SALES FORECASTING. CREST PUBLISHING HOUSE, 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.