एपीए उद्धरण

World Health Organization. (1996). Cancer pain relief: With a guide to opioid availability (2nd ed.). WHO.

शिकागो स्टाइल उद्धरण

World Health Organization. Cancer Pain Relief: With a Guide to Opioid Availability. 2nd ed. Geneva: WHO, 1996.

एमएलए उद्धरण

World Health Organization. Cancer Pain Relief: With a Guide to Opioid Availability. 2nd ed. WHO, 1996.