APA (7e ed.) Bronvermelding

(1923). The World almanac and book of facts. Press Pub. Co.

Chicago (17e ed.) Bronvermelding

The World Almanac and Book of Facts. New York: Press Pub. Co, 1923.

MLA (8e ed.) Bronvermelding

The World Almanac and Book of Facts. Press Pub. Co, 1923.