Citação norma APA

Allen, A. W., & Welch, C. E. (1941). GASTRIC ULCER: THE SIGNIFICANCE OF THIS DIAGNOSIS AND ITS RELATIONSHIP TO CANCER.

Citação norma Chicago

Allen, Arthur W., and Claude E. Welch. GASTRIC ULCER: THE SIGNIFICANCE OF THIS DIAGNOSIS AND ITS RELATIONSHIP TO CANCER. 1941.

Citação norma MLA

Allen, Arthur W., and Claude E. Welch. GASTRIC ULCER: THE SIGNIFICANCE OF THIS DIAGNOSIS AND ITS RELATIONSHIP TO CANCER. 1941.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.