McFadden, C. H., & Keeton, W. T. (1995). Biology: An exploration of life. W.W. Norton.
Lua i Stíl Chicago (17ú heag.)McFadden, Carol Hardy, agus William T. Keeton. Biology: An Exploration of Life. New York: W.W. Norton, 1995.
Lua MLA (9ú heag.)McFadden, Carol Hardy, agus William T. Keeton. Biology: An Exploration of Life. W.W. Norton, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.