Navarra, J. G., Zafforoni, J., & Garone, J. E. (1973). Life in the environment: The biological sciences. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Navarra, John Gabriel, Joseph Zafforoni, agus John Edward Garone. Life in the Environment: The Biological Sciences. New York: Harper & Row, 1973.
Lua MLA (8ú heag.)Navarra, John Gabriel, et al. Life in the Environment: The Biological Sciences. Harper & Row, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.