APA

Estados Unidos. Department of Health E. a. W., . (1974). Occupational exposure to benzene. Estados Unidos: U.S. Department of Health, Education and Welfare.

Chicago

Estados Unidos. Department of Health Education and Welfare, . 1974. Occupational exposure to benzene. Estados Unidos: U.S. Department of Health, Education and Welfare.

Harvard

Estados Unidos. Department of Health E. a. W., . (1974). Occupational exposure to benzene. Estados Unidos: U.S. Department of Health, Education and Welfare.

MLA

Estados Unidos. Department of Health Education and Welfare, . Occupational exposure to benzene. Estados Unidos: U.S. Department of Health, Education and Welfare. 1974.