Walker, R. G. (1986). Facies Models (2nd ed.). Geological Association of Canada Publications.
Lua i Stíl Chicago (17ú heag.)Walker, Roger G. Facies Models. 2nd ed. Ontario: Geological Association of Canada Publications, 1986.
Lua MLA (9ú heag.)Walker, Roger G. Facies Models. 2nd ed. Geological Association of Canada Publications, 1986.
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