LOUNSBURY, J. F., & OGDEN, L. (1969). Earth science. Harper and Row Publishers.
Lua i Stíl Chicago (17ú heag.)LOUNSBURY, John F., agus Lawrence OGDEN. Earth Science. New York: Harper and Row Publishers, 1969.
Lua MLA (9ú heag.)LOUNSBURY, John F., agus Lawrence OGDEN. Earth Science. Harper and Row Publishers, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.