Gandini S, Botteri E, Iodice S, Boniol M, Lowenfels AB, Maisonneuve P, Boyle P (January 2008). "Tobacco smoking and cancer: a meta-analysis". International Journal of Cancer. 122 (1): 155–64. doi:10.1002/ijc.23033. PMID17893872.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
Kreimer AR, Clifford GM, Boyle P, Franceschi S (February 2005). "Human papillomavirus types in head and neck squamous cell carcinomas worldwide: a systematic review". Cancer Epidemiology, Biomarkers & Prevention. 14 (2): 467–75. doi:10.1158/1055-9965.EPI-04-0551. PMID15734974.
Goldenberg D, Lee J, Koch WM, Kim MM, Trink B, Sidransky D, Moon CS (December 2004). "Habitual risk factors for head and neck cancer". Otolaryngology–Head and Neck Surgery. 131 (6): 986–93. doi:10.1016/j.otohns.2004.02.035. PMID15577802.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
"Cancer today". gco.iarc.fr (dalam bahasa Inggris). Diakses tanggal 9 June 2019.
nih.gov
ncbi.nlm.nih.gov
Gandini S, Botteri E, Iodice S, Boniol M, Lowenfels AB, Maisonneuve P, Boyle P (January 2008). "Tobacco smoking and cancer: a meta-analysis". International Journal of Cancer. 122 (1): 155–64. doi:10.1002/ijc.23033. PMID17893872.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
Kreimer AR, Clifford GM, Boyle P, Franceschi S (February 2005). "Human papillomavirus types in head and neck squamous cell carcinomas worldwide: a systematic review". Cancer Epidemiology, Biomarkers & Prevention. 14 (2): 467–75. doi:10.1158/1055-9965.EPI-04-0551. PMID15734974.
Goldenberg D, Lee J, Koch WM, Kim MM, Trink B, Sidransky D, Moon CS (December 2004). "Habitual risk factors for head and neck cancer". Otolaryngology–Head and Neck Surgery. 131 (6): 986–93. doi:10.1016/j.otohns.2004.02.035. PMID15577802.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)