APA aipamena

Zimmermann, E. W. (1951). World resources and industries: A functional appraisal of the availability of agticulture and industrial materials. New York: Happer and Brother Publisher.

Chicago Style aipamena

Zimmermann, Erich W. World Resources and Industries: A Functional Appraisal of the Availability of Agticulture and Industrial Materials. New York: Happer and Brother Publisher, 1951.

MLA aipamena

Zimmermann, Erich W. World Resources and Industries: A Functional Appraisal of the Availability of Agticulture and Industrial Materials. New York: Happer and Brother Publisher, 1951.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.