APA

Estados Unidos. Agency for Toxic Substances and Disease Registry A., . (1997). Toxicological Profile for Tetrachloroethylene (PERC). Atlanta: Estados Unidos. Department of Health and Human Services.

Chicago

Estados Unidos. Agency for Toxic Substances and Disease Registry ATSDR, . 1997. Toxicological Profile for Tetrachloroethylene (PERC). Atlanta: Estados Unidos. Department of Health and Human Services.

Harvard

Estados Unidos. Agency for Toxic Substances and Disease Registry A., . (1997). Toxicological Profile for Tetrachloroethylene (PERC). Atlanta: Estados Unidos. Department of Health and Human Services.

MLA

Estados Unidos. Agency for Toxic Substances and Disease Registry ATSDR, . Toxicological Profile for Tetrachloroethylene (PERC). Atlanta: Estados Unidos. Department of Health and Human Services. 1997.