APA (7th ed.) Citation

Nelson, R. R. (1991). Why do firms differ, and how does it matter? Univ. of California, Center for Research in Management.

Chicago Style (17th ed.) Citation

Nelson, Richard R. Why Do Firms Differ, and How Does It Matter? Berkeley, Calif: Univ. of California, Center for Research in Management, 1991.

MLA (9th ed.) Citation

Nelson, Richard R. Why Do Firms Differ, and How Does It Matter? Univ. of California, Center for Research in Management, 1991.