Ronald Melzack, P. W. (1987). <O >desafio da dor. FCG.
Lua i Stíl Chicago (17ú heag.)Ronald Melzack, Patrick Wall. <O >desafio Da Dor. FCG, 1987.
Lua MLA (8ú heag.)Ronald Melzack, Patrick Wall. <O >desafio Da Dor. FCG, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.