Samuel W. Beenken, MD. Laryngeal Cancer (Cancer of the larynx). Laryngeal Cancer (Cancer of the larynx). Armenian Health Network, Health.am. [2007-03-22]. (原始内容存档于2020-11-27).
Samuel W. Beenken, MD. Laryngeal Cancer (Cancer of the larynx). Laryngeal Cancer (Cancer of the larynx). Armenian Health Network, Health.am. [2007-03-22]. (原始内容存档于2020-11-27).