Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
Цитирование в стиле Чикаго (17-е изд.)Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
Цитирование MLA (9-е изд.)Head & Neck Cancer: Questions & Answers (2017). National Cancer Institute Member Services.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.