Citazione APA

Ferber, R. V. P. J. (1962). Research methods in economic & business.

Stile di citazione Chicago

Ferber, Robert; Verdoorn P J. Research Methods in Economic & Business. Macmillan Company, New York, 1962.

Citazione MLA

Ferber, Robert; Verdoorn P J. Research Methods in Economic & Business. 1962.