Arnold, C., & Hogan, J. (2012). A warmer world: From polar bears to butterflies, how climate change affects wildlife. Charlesbridge.
Cita Chicago Style (17a ed.)Arnold, Caroline, y Jamie Hogan. A Warmer World: From Polar Bears to Butterflies, How Climate Change Affects Wildlife. Watertown, MA: Charlesbridge, 2012.
Cita MLA (8a ed.)Arnold, Caroline, y Jamie Hogan. A Warmer World: From Polar Bears to Butterflies, How Climate Change Affects Wildlife. Charlesbridge, 2012.
Precaución: Estas citas no son 100% exactas.