Cita APA (7th ed.)

(1992). American almanac: December. U.S. Bureau of the Census.

Cita Chicago (17th ed.)

American Almanac: December. USA: U.S. Bureau of the Census, 1992.

Cita MLA (8th ed.)

American Almanac: December. U.S. Bureau of the Census, 1992.

Atenció: Aquestes cites poden no estar 100% correctes.