Cita APA (7a ed.)

Ferber, R., & Verdoorn, P. J. (1963). Research methods in economics & business: Robert Ferber, P.J. Verdoorn (2a ed.). Macmillan.

Cita Chicago Style (17a ed.)

Ferber, Robert, y P. J. Verdoorn. Research Methods in Economics & Business: Robert Ferber, P.J. Verdoorn. 2a ed. New York: Macmillan, 1963.

Cita MLA (9a ed.)

Ferber, Robert, y P. J. Verdoorn. Research Methods in Economics & Business: Robert Ferber, P.J. Verdoorn. 2a ed. Macmillan, 1963.