EMMONS, W. H. (1960). Geology principles and proceses - Williams H Emmoms, IRAS Allison, Clinton R. Stauffer. Mc Graw Hill.
Lua i Stíl Chicago (17ú heag.)EMMONS, Williams H. Geology Principles and Proceses - Williams H Emmoms, IRAS Allison, Clinton R. Stauffer. Mc Graw Hill, 1960.
Lua MLA (8ú heag.)EMMONS, Williams H. Geology Principles and Proceses - Williams H Emmoms, IRAS Allison, Clinton R. Stauffer. Mc Graw Hill, 1960.
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