The Wharton annual and industry forecasting model /
by Ross S. Preston.
APA Citation
Preston, R. S. (1972). The Wharton annual and industry forecasting model. Philadelphia: Economics Research Unit, University of Pennsylvania.
MLA Citation
Preston, R. S. The Wharton Annual And Industry Forecasting Model. Philadelphia: Economics Research Unit, University of Pennsylvania, 1972.
Warning: These citations may not always be complete (especially for serials).