Παραπομπή APA
Population Association of America., & Princeton University. Office of Population Research. (1964). Population Index. United States: Office of Population Research.Princeton University.
Παραπομπή Chicago StylePopulation Association of America., and Princeton University. Office of Population Research. Population Index. United States: Office of Population Research.Princeton University, 1964.
Παραπομπή MLAPopulation Association of America., and Princeton University. Office of Population Research. Population Index. United States: Office of Population Research.Princeton University, 1964.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.