Cita APA (7a ed.)

Anavitarte, E., Arruti, C., Torres, D., & Bazzano, H. (1972). Massive digestive bleeding in a 10-year-old boy: Surgical treatment.

Cita Chicago Style (17a ed.)

Anavitarte, Eduardo, César Arruti, Davir Torres, y Héctor Bazzano. Massive Digestive Bleeding in a 10-year-old Boy: Surgical Treatment. 1972.

Cita MLA (9a ed.)

Anavitarte, Eduardo, et al. Massive Digestive Bleeding in a 10-year-old Boy: Surgical Treatment. 1972.