FLINT, R. F. Physical geology#Richard Foster Flint, Brian J. Skinner. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)FLINT, Richard Foster. Physical Geology#Richard Foster Flint, Brian J. Skinner. John Wiley & Sons.
Lua MLA (8ú heag.)FLINT, Richard Foster. Physical Geology#Richard Foster Flint, Brian J. Skinner. John Wiley & Sons.
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