Grayson, P. E. (1949). A technique for analyzing causally related factors affecting price.
Chicago-referens (17:e uppl.)Grayson, Paul Eugene. A Technique for Analyzing Causally Related Factors Affecting Price. [Ithaca, N.Y.], 1949.
MLA-referens (8:e uppl.)Grayson, Paul Eugene. A Technique for Analyzing Causally Related Factors Affecting Price. 1949.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.