Cita APA (7a ed.)

Canessa, C., Gómez del Valle, M. J., & Caraballo, M. (2002). Chronic fecal impaction in the megarectosigmoid. Therapeutic behavior.

Cita Chicago Style (17a ed.)

Canessa, César, María José Gómez del Valle, y Mónica Caraballo. Chronic Fecal Impaction in the Megarectosigmoid. Therapeutic Behavior. 2002.

Cita MLA (9a ed.)

Canessa, César, et al. Chronic Fecal Impaction in the Megarectosigmoid. Therapeutic Behavior. 2002.