Citação norma APA

Weinhold, B. (2012). EPA Proposes Tighter Particulate Air Pollution Standards. National Institute of Environmental Health Sciences.

Citação norma Chicago

Weinhold, Bob. EPA Proposes Tighter Particulate Air Pollution Standards. National Institute of Environmental Health Sciences, 2012.

Citação norma MLA

Weinhold, Bob. EPA Proposes Tighter Particulate Air Pollution Standards. National Institute of Environmental Health Sciences, 2012.

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