Cita APA

Levo, Y., & Pick, A. I. (1974). Cullen's Sign, Hepatoma, and α-Fetoprotein.

Chicago Style Citation

Levo, Y., i A. I. Pick. Cullen's Sign, Hepatoma, and α-Fetoprotein. 1974.

Cita MLA

Levo, Y., i A. I. Pick. Cullen's Sign, Hepatoma, and α-Fetoprotein. 1974.