Citação norma APA

World Health Organization. (1995). International travel and health: Vaccination requirements and health advice. World Health Organization.

Citação norma Chicago

World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. Geneva: World Health Organization, 1995.

Citação norma MLA

World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. World Health Organization, 1995.

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