Dyfyniad APA

United States. Bureau of the Census & United States. National Archives and Records Administration. (1990). 14th census of population, 1920. National Archives and Records Administration ; Available from Scholarly Resources Inc..

Dyfyniad Arddull Chicago

United States. Bureau of the Census and United States. National Archives and Records Administration. 14th Census of Population, 1920. Washington : Wilmington, DE: National Archives and Records Administration ; Available from Scholarly Resources Inc., 1990.

Dyfyniad MLA

United States. Bureau of the Census and United States. National Archives and Records Administration. 14th Census of Population, 1920. National Archives and Records Administration ; Available from Scholarly Resources Inc., 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.