Gaya APA

Hanke, J, E., Reitsch, A, G. (1998). Business Forecasting (Fotocopy) (1998). : London : Prentice-Hall International Ltd.,.

Gaya MLA

Hanke, John, E., Reitsch, Arthur, G. "Business Forecasting (Fotocopy)". 1998 : London : Prentice-Hall International Ltd.,, 1998. Text.