Wolfe, A., & Chadwick, D. H. (1990). The kingdom: Wildlife in North America. Sierra Club Books ; National Wildlife Federation.
Cita Chicago Style (17a ed.)Wolfe, Art, y Douglas H. Chadwick. The Kingdom: Wildlife in North America. San Francisco : Washington, D.C.: Sierra Club Books ; National Wildlife Federation, 1990.
Cita MLA (8a ed.)Wolfe, Art, y Douglas H. Chadwick. The Kingdom: Wildlife in North America. Sierra Club Books ; National Wildlife Federation, 1990.
Precaución: Estas citas no son 100% exactas.