Dott, R. H., & Batten, R. L. (1971). Evolution of the earth. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Dott, Robert H., agus Roger L. Batten. Evolution of the Earth. New York: McGraw-Hill, 1971.
Lua MLA (8ú heag.)Dott, Robert H., agus Roger L. Batten. Evolution of the Earth. McGraw-Hill, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.