Cita APA

(1970). Survey of world iron ore resources: Ocurrence and appraisal. New York: United Nations.

Citación estilo Chicago

Survey of World Iron Ore Resources: Ocurrence and Appraisal. New York: United Nations, 1970.

Cita MLA

Survey of World Iron Ore Resources: Ocurrence and Appraisal. New York: United Nations, 1970.

Precaución: Estas citas no son 100% exactas.