Cita APA (7a ed.)

Estefan, A., Melogno, S., & Portos, R. (1973). Gallbladder cancer: Incidence and pathology: about 175 observations.

Cita Chicago Style (17a ed.)

Estefan, Alberto, Silvio Melogno, y Roberto Portos. Gallbladder Cancer: Incidence and Pathology: About 175 Observations. 1973.

Cita MLA (9a ed.)

Estefan, Alberto, et al. Gallbladder Cancer: Incidence and Pathology: About 175 Observations. 1973.