APA Style

World Health Organization, author.. (). A pocket guide to pain management (3rd). : .

Chicago Style

World Health Organization, author.. A pocket guide to pain management. 3rd : , . Ebook.

MLA Style

World Health Organization, author.. A pocket guide to pain management. 3rd : , . Ebook.

Turabian Style

World Health Organization, author.. A pocket guide to pain management. 3rd : , . Ebook.