APA (7th ed.) Citation

World... & (et.al), J. B. (2000). Proceedings of the 9th world congress on pain. IASP Press.

Chicago Style (17th ed.) Citation

World... and Jean-Marie Besson (et.al). Proceedings of the 9th World Congress on Pain. IASP Press, 2000.

MLA (8th ed.) Citation

World... and Jean-Marie Besson (et.al). Proceedings of the 9th World Congress on Pain. IASP Press, 2000.

Warning: These citations may not always be 100% accurate.