← Search American Economic Review Vol. 72 No. 5 1982 Ambiguous Changes in Product Quality Keith B. Leffler Volume72 Issue5 Pages956-967 Sources bibtex:phds-export.bib 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 ✓