PHYSICAL GEOLOGY .. & JUDSON, S. e. (1996). Physical geology: The lab book. Prentice Hall.
Chicago-čujuhus (17. p.)PHYSICAL GEOLOGY .. juo Sheldon et.al JUDSON. Physical Geology: The Lab Book. New Jersey: Prentice Hall, 1996.
MLA-čujuhus (9. p.)PHYSICAL GEOLOGY .. juo Sheldon et.al JUDSON. Physical Geology: The Lab Book. Prentice Hall, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.