Montgomery, C. W. (1987). Physical geology. Va. C. Brown.
Chicago-čujuhus (17. p.)Montgomery, Carla W. Physical Geology. Dubuque: Va. C. Brown, 1987.
MLA-čujuhus (9. p.)Montgomery, Carla W. Physical Geology. Va. C. Brown, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.