Zimmermann, E. W. (1951). World Ressources and industries: A functional appraisal of the availability of agricultural and industrial materials (Rev. ed.). Harper.
Chicago-Zitierstil (17. Ausg.)Zimmermann, Erich W. World Ressources and Industries: A Functional Appraisal of the Availability of Agricultural and Industrial Materials. Rev. ed. New York: Harper, 1951.
MLA-Zitierstil (9. Ausg.)Zimmermann, Erich W. World Ressources and Industries: A Functional Appraisal of the Availability of Agricultural and Industrial Materials. Rev. ed. Harper, 1951.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.