Παραπομπή APA

(1922). Fourteenth census of the United States taken in the year 1920. Washington, D.C: Government Printing Office.

Παραπομπή Chicago Style

Fourteenth Census of the United States Taken in the Year 1920. Washington, D.C: Government Printing Office, 1922.

Παραπομπή MLA

Fourteenth Census of the United States Taken in the Year 1920. Washington, D.C: Government Printing Office, 1922.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.