Wyckoff, J. ,. (1966). Rock time , and landforms. Harper & Row.
Chicago-čujuhus (17. p.)Wyckoff, Jerome ,. Rock Time , and Landforms. New york: Harper & Row, 1966.
MLA-čujuhus (9. p.)Wyckoff, Jerome ,. Rock Time , and Landforms. Harper & Row, 1966.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.