APA-čujuhus (7. p.)
ebrary, Inc, & Carlsen, W. S. (2004). Watershed dynamics (Teacher ed.). NSTA Press, National Science Teachers Association.
Chicago-čujuhus (17. p.)
ebrary, Inc, juo William S. Carlsen. Watershed Dynamics. Teacher ed. Arlington, Va.: NSTA Press, National Science Teachers Association, 2004.
MLA-čujuhus (9. p.)
ebrary, Inc, juo William S. Carlsen. Watershed Dynamics. Teacher ed. NSTA Press, National Science Teachers Association, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.