Citação norma APA

World Health Organization. (2011). Psychological first aid: Guide for field workers. World Health Organization.

Citação norma Chicago

World Health Organization. Psychological First Aid: Guide for Field Workers. Geneva, Switzerland: World Health Organization, 2011.

Citação norma MLA

World Health Organization. Psychological First Aid: Guide for Field Workers. World Health Organization, 2011.

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