Allen, P. A. (1997). Earth surface processesses. Blackwell.
Chicago-čujuhus (17. p.)Allen, Philip A. Earth Surface Processesses. London: Blackwell, 1997.
MLA-čujuhus (9. p.)Allen, Philip A. Earth Surface Processesses. Blackwell, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.