Lua APA (7ú heag.)

Montgomery, C. W. (1986). Environmental geology. W.C. Brown Publishers.

Lua i Stíl Chicago (17ú heag.)

Montgomery, Carla W. Environmental Geology. Dubuque, Iowa: W.C. Brown Publishers, 1986.

Lua MLA (9ú heag.)

Montgomery, Carla W. Environmental Geology. W.C. Brown Publishers, 1986.

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