Monroe, J. S., & Wicander, R. (1997). The changing earth: Exploring geology and evolution (2nd ed.). Wadsworth Pub.
Lua i Stíl Chicago (17ú heag.)Monroe, James S., agus Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Belmont, Calif: Wadsworth Pub, 1997.
Lua MLA (9ú heag.)Monroe, James S., agus Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Wadsworth Pub, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.