Rollins, J., & Baskous, C. (2014). The 6th extinction (Unabridged.).
Cita Chicago Style (17a ed.)Rollins, James, y Christian Baskous. The 6th Extinction. Unabridged. 2014.
Cita MLA (8a ed.)Rollins, James, y Christian Baskous. The 6th Extinction. Unabridged. 2014.
Precaución: Estas citas no son 100% exactas.