APA (7th ed.) Zitazioa

USHER, D. (1980). The Measurement of economic growth. Heritage.

Chicago Style (17th ed.) Zitazioa

USHER, Dan. The Measurement of Economic Growth. New Delhi: Heritage, 1980.

MLA (9th ed.) Zitazioa

USHER, Dan. The Measurement of Economic Growth. Heritage, 1980.