Tarbuck, E. (1988). Earth Science Edward J. Tarbuck; Frederick K. Lutgens. Merril.
Lua i Stíl Chicago (17ú heag.)Tarbuck, Edward. Earth Science Edward J. Tarbuck; Frederick K. Lutgens. Merril, 1988.
Lua MLA (8ú heag.)Tarbuck, Edward. Earth Science Edward J. Tarbuck; Frederick K. Lutgens. Merril, 1988.
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