APA (7e ed.) Bronvermelding

U.S. Bureau of Labor Statistics. (1941). Retail prices of food. U.S. Govt. Print. Off.

Chicago (17e ed.) Bronvermelding

U.S. Bureau of Labor Statistics. Retail Prices of Food. Washington, D.C: U.S. Govt. Print. Off, 1941.

MLA (9e ed.) Bronvermelding

U.S. Bureau of Labor Statistics. Retail Prices of Food. U.S. Govt. Print. Off, 1941.