APA (7th ed.) Zitazioa

ZIMMERMANN, E. W. (1951). World resources and industries: A functional appraisal of the availability of agricultural and industrial materials. Harper & Row.

Chicago Style (17th ed.) Zitazioa

ZIMMERMANN, Erich W. World Resources and Industries: A Functional Appraisal of the Availability of Agricultural and Industrial Materials. New York: Harper & Row, 1951.

MLA (9th ed.) Zitazioa

ZIMMERMANN, Erich W. World Resources and Industries: A Functional Appraisal of the Availability of Agricultural and Industrial Materials. Harper & Row, 1951.