Lewis, R. (1992). Life: Beginnings of life, animal life, plant life, evolution of life, behavior and ecology of life. Wm. C. Brown.
Cita Chicago Style (17a ed.)Lewis, Ricki. Life: Beginnings of Life, Animal Life, Plant Life, Evolution of Life, Behavior and Ecology of Life. Dubuque, IA: Wm. C. Brown, 1992.
Cita MLA (9a ed.)Lewis, Ricki. Life: Beginnings of Life, Animal Life, Plant Life, Evolution of Life, Behavior and Ecology of Life. Wm. C. Brown, 1992.
Precaución: Estas citas no son 100% exactas.