Cita APA (7a ed.)

Piñeyro, A., Carriquiry, L. A., & Navarrete, H. (1991). Psoas abscess: Rare complication of Crohn's disease.

Cita Chicago Style (17a ed.)

Piñeyro, Alberto, Luis A. Carriquiry, y Héctor Navarrete. Psoas Abscess: Rare Complication of Crohn's Disease. 1991.

Cita MLA (9a ed.)

Piñeyro, Alberto, et al. Psoas Abscess: Rare Complication of Crohn's Disease. 1991.