DOORKAMP, J. C., & KING, C. A. (1971). Numerical analysis in geomorphology an introduction. Butler and Tanner.
Lua i Stíl Chicago (17ú heag.)DOORKAMP, John C., agus Cuchlaine A.M KING. Numerical Analysis in Geomorphology an Introduction. London: Butler and Tanner, 1971.
Lua MLA (9ú heag.)DOORKAMP, John C., agus Cuchlaine A.M KING. Numerical Analysis in Geomorphology an Introduction. Butler and Tanner, 1971.
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