Citação norma APA

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

Citação norma Chicago

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.

Citação norma MLA

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

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.