Lua APA (7ú heag.)

BUTZER, K. W. (1976). Geomorphology from the earth. Harper and Row.

Lua i Stíl Chicago (17ú heag.)

BUTZER, Karl W. Geomorphology from the Earth. New York: Harper and Row, 1976.

Lua MLA (9ú heag.)

BUTZER, Karl W. Geomorphology from the Earth. Harper and Row, 1976.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.