Gaya APA

O'Shaughnessy, N, K, M, M, D. et al (2006). Current Diagnosis & Treatment PAIN . : Mc Graw Inc.

Gaya MLA

O'Shaughnessy, Nigel, Key;, Michael, Makris;, Denise. et al. "Current Diagnosis & Treatment PAIN". : Mc Graw Inc, 2006. Text.