Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
Čikaški stil citiranja (17. izdanje)Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
MLA način citiranja (9. izdanje)Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.