APA

(1971). Forecasting series: reprints from Harvard business review. Boston: Harvard Business Review Reprint Service.

Chicago

1971. Forecasting series: reprints from Harvard business review. Boston: Harvard Business Review Reprint Service.

Harvard

(1971). Forecasting series: reprints from Harvard business review. Boston: Harvard Business Review Reprint Service.

MLA

Forecasting series: reprints from Harvard business review. Boston: Harvard Business Review Reprint Service. 1971.