Tarbuck, E. J., & Lutgens, F. K. (2006). Prentice Hall earth science. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Tarbuck, Edward J., agus Frederick K. Lutgens. Prentice Hall Earth Science. Upper Saddle River, N.J: Prentice Hall, 2006.
Lua MLA (9ú heag.)Tarbuck, Edward J., agus Frederick K. Lutgens. Prentice Hall Earth Science. Prentice Hall, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.