Mortara, G. (1964). Characteristics of the demographic structure of the american countries. Washington, D.C: Pan American Union.
Παραπομπή Chicago StyleMortara, Giorgio. Characteristics of the Demographic Structure of the American Countries. Washington, D.C: Pan American Union, 1964.
Παραπομπή MLAMortara, Giorgio. Characteristics of the Demographic Structure of the American Countries. Washington, D.C: Pan American Union, 1964.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.