Howell, C. H. (2016). Reptiles & amphibians. National Geographic.
Cita Chicago Style (17a ed.)Howell, Catherine Herbert. Reptiles & Amphibians. Washington, D.C.: National Geographic, 2016.
Cita MLA (8a ed.)Howell, Catherine Herbert. Reptiles & Amphibians. National Geographic, 2016.
Precaución: Estas citas no son 100% exactas.