Halliday, T., & Adler, K. (1986). The encyclopedia of reptiles and amphibians. Facts on File.
Cita Chicago Style (17a ed.)Halliday, Tim, y Kraig Adler. The Encyclopedia of Reptiles and Amphibians. New York, N.Y.: Facts on File, 1986.
Cita MLA (8a ed.)Halliday, Tim, y Kraig Adler. The Encyclopedia of Reptiles and Amphibians. Facts on File, 1986.
Precaución: Estas citas no son 100% exactas.