Lewis, R., Goodenough, J., & Moore, R. (1992). Life: Beginnings of life, animal life, plant life, evolution of life, behavior and ecology of life. Wm. C. Brown Publishers.
Dyfyniad Arddull ChicagoLewis, Ricki, Judith Goodenough, and Randy Moore. Life: Beginnings of Life, Animal Life, Plant Life, Evolution of Life, Behavior and Ecology of Life. Dubuque, IA: Wm. C. Brown Publishers, 1992.
Dyfyniad MLALewis, Ricki, et al. Life: Beginnings of Life, Animal Life, Plant Life, Evolution of Life, Behavior and Ecology of Life. Wm. C. Brown Publishers, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.