World Health Organization. (1996). Cancer pain relief: With a guide to opioid availability. Geneva: World Health Organization.
Chicago Style citaatWorld Health Organization. Cancer Pain Relief: With a Guide to Opioid Availability. Geneva: World Health Organization, 1996.
MLA citatieWorld Health Organization. Cancer Pain Relief: With a Guide to Opioid Availability. Geneva: World Health Organization, 1996.
Let op: Deze citaties zijn niet altijd 100% accuraat.