Murphey, R. (1978). An introduction to geography (4th ed.). Rand McNally.
Lua i Stíl Chicago (17ú heag.)Murphey, Rhoads. An Introduction to Geography. 4th ed. Chicago: Rand McNally, 1978.
Lua MLA (9ú heag.)Murphey, Rhoads. An Introduction to Geography. 4th ed. Rand McNally, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.