Citação norma APA

World Health Organization. (1996). Cancer pain relief: With a guide to opioid availability. Geneva: World Health Organization.

Citação norma Chicago

World Health Organization. Cancer Pain Relief: With a Guide to Opioid Availability. Geneva: World Health Organization, 1996.

Citação norma MLA

World Health Organization. Cancer Pain Relief: With a Guide to Opioid Availability. Geneva: World Health Organization, 1996.

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