Dyfyniad APA

J. Walter Thompson Company & United States. Bureau of the Census. (1918). Population and its distribution (2nd ed., rev. and enl.). J. Walter Thompson.

Dyfyniad Arddull Chicago

J. Walter Thompson Company and United States. Bureau of the Census. Population and Its Distribution. 2nd ed., rev. and enl. New York: J. Walter Thompson, 1918.

Dyfyniad MLA

J. Walter Thompson Company and United States. Bureau of the Census. Population and Its Distribution. 2nd ed., rev. and enl. J. Walter Thompson, 1918.

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