Citazione Stile APA (7a Edizione)

U.S. Bureau of Labor Statistics. (1968). Employment and earnings statistics for the United States, 1909-62. Based on the 1957 Standard industrial classification.

Citazione stile Chigago Style (17a edizione)

U.S. Bureau of Labor Statistics. Employment and Earnings Statistics for the United States, 1909-62. Based on the 1957 Standard Industrial Classification. Washington, 1968.

Citatione MLA (9a ed.)

U.S. Bureau of Labor Statistics. Employment and Earnings Statistics for the United States, 1909-62. Based on the 1957 Standard Industrial Classification. 1968.