Cita APA (7a ed.)

Bercianos, C., Estrugo, R., Perrone, L., & Paperán, J. (1977). Non-parasitic liver cysts.

Cita Chicago Style (17a ed.)

Bercianos, Carlos, Roberto Estrugo, Luis Perrone, y Juan Paperán. Non-parasitic Liver Cysts. 1977.

Cita MLA (9a ed.)

Bercianos, Carlos, et al. Non-parasitic Liver Cysts. 1977.