Monroe, J. S., & Wicander, R. (2006). The changing Earth: Exploring geology and evolution (4th ed.). Thomson Brooks/Cole.
Lua i Stíl Chicago (17ú heag.)Monroe, James S., agus Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 4th ed. Belmont, CA: Thomson Brooks/Cole, 2006.
Lua MLA (9ú heag.)Monroe, James S., agus Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 4th ed. Thomson Brooks/Cole, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.