MORGAN, R. (1979). Soil erosion: Topics in applied geography. Longman.
Chicago-čujuhus (17. p.)MORGAN, R.P.C. Soil Erosion: Topics in Applied Geography. London: Longman, 1979.
MLA-čujuhus (9. p.)MORGAN, R.P.C. Soil Erosion: Topics in Applied Geography. Longman, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.