← Search Journal of Political Economy Vol. 78 No. 6 1970 Volume Information DOI10.1086/jpe.78.6.1830619 Volume78 Issue6 Pages1387-1390 Languageen Sources semanticscholar openalex crossref Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓