Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
Chicago-referens (17:e uppl.)Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
MLA-referens (9:e uppl.)Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.