Ласен Пик — разлика између измена

* {{Cite book |ref= harv|last1=Osterkamp|first1=W.R.|last2=Hedman|first2=E.R.|title=Perennial-Streamflow Characteristics Related to Channel Geometry and Sediment in Missouri River Basin|url=http://books.google.com/books?id=3zrwAAAAMAAJ&pg=RA6-PA7|accessdate = 21. 5. 2011.|year=1982|publisher=[[United States Geological Survey]]|page=7| ref = harv}}