APA

Casella G., Perego D., Corti G., Cambareri A. R., Buda C. A., Zoldan C. & Baldini V. (20011205). Black esophagus: should it be considered an unfavorable prognostic factor?. : Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus.

Chicago

Casella G, Perego D, Corti G, Cambareri A R, Buda C A, Zoldan C and Baldini V. 20011205. Black esophagus: should it be considered an unfavorable prognostic factor?. : Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus.

Harvard

Casella G., Perego D., Corti G., Cambareri A. R., Buda C. A., Zoldan C. and Baldini V. (20011205). Black esophagus: should it be considered an unfavorable prognostic factor?. : Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus.

MLA

Casella G, Perego D, Corti G, Cambareri A R, Buda C A, Zoldan C and Baldini V. Black esophagus: should it be considered an unfavorable prognostic factor?. : Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus. 20011205.