← Search Econometrica Vol. 38 No. 5 1970 The Asymptotic Unbiasedness of Two-Stage Least Squares David H. Richardson DOI10.2307/1912206 Volume38 Issue5 Pages772 Sources bibtex:phds-export.bib semanticscholar crossref openalex 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 ✓