Cita APA (7a ed.)

Gelfo, J. N., López, G. M., & Santillana, S. N. (2017). Eocene ungulate mammals from West Antarctica: Implications from their fossil record and a new species.

Cita Chicago Style (17a ed.)

Gelfo, Javier Nicolás, Guillermo Marcos López, y Sergio N. Santillana. Eocene Ungulate Mammals from West Antarctica: Implications from Their Fossil Record and a New Species. 2017.

Cita MLA (8a ed.)

Gelfo, Javier Nicolás, et al. Eocene Ungulate Mammals from West Antarctica: Implications from Their Fossil Record and a New Species. 2017.