Kelly, E., & Kissel, R. (2008). Evolving planet: Four billion years of life on Earth. Abrams Books for Young Readers.
Cita Chicago Style (17a ed.)Kelly, Erica, y Richard Kissel. Evolving Planet: Four Billion Years of Life on Earth. New York: Abrams Books for Young Readers, 2008.
Cita MLA (8a ed.)Kelly, Erica, y Richard Kissel. Evolving Planet: Four Billion Years of Life on Earth. Abrams Books for Young Readers, 2008.
Precaución: Estas citas no son 100% exactas.