Cita APA (7a ed.)

Bond, M., Tonni, E. P., & Soibelzon, L. H. (2005). The fossil record of South American short-faced bears (Ursidae, Tremarctinae).

Cita Chicago Style (17a ed.)

Bond, Mariano, Eduardo Pedro Tonni, y Leopoldo Héctor Soibelzon. The Fossil Record of South American Short-faced Bears (Ursidae, Tremarctinae). 2005.

Cita MLA (8a ed.)

Bond, Mariano, et al. The Fossil Record of South American Short-faced Bears (Ursidae, Tremarctinae). 2005.