APA (7th ed.) Citation

Ferber, R., & Verdoorn, P. J. (1970). Research methods in economics and business (5.print.). Macmillan.

Chicago Style (17th ed.) Citation

Ferber, Robert, and Petrus J. Verdoorn. Research Methods in Economics and Business. 5.print. New York: Macmillan, 1970.

MLA (9th ed.) Citation

Ferber, Robert, and Petrus J. Verdoorn. Research Methods in Economics and Business. 5.print. Macmillan, 1970.