ISBN 92-4-156272-2. ↑ Cogliano, VJ; Baan, R; Straif, K; Grosse, Y; Lauby-Secretan, B; El Ghissassi, F; Bouvard, V; Benbrahim-Tallaa, L; Guha, N; Freeman, C; Galichet, L; Wild, CP (Dec 21, 2011). "Preventable exposures associated with human cancers.".