← Search Journal of Finance Vol. 26 No. 4 1971 Test of Portfolio Building Rules: Comment Irwin E. Jones DOI10.2307/2325249 Volume26 Issue4 Pages973 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 ✓