Gaya APA

(IASP), I, A, F, T, S, O, P. (2003). Proceedings of the 9th World Congress on Pain (Vienna, Austria, August 22-27, 1999) . Seattle: IASP Press.

Gaya MLA

(IASP), International, Association, For, The, Study, Of, Pain. "Proceedings of the 9th World Congress on Pain (Vienna, Austria, August 22-27, 1999)". Seattle: IASP Press, 2003. Text.