Birkeland, P. W. (1987). Holocene alpine soils in gneissic cirque deposits, Colorado Front Range. United States Gov. Print. Off.
Chicago Style (17th ed.) CitationBirkeland, Peter W. Holocene Alpine Soils in Gneissic Cirque Deposits, Colorado Front Range. Washington: United States Gov. Print. Off, 1987.
MLA (9th ed.) CitationBirkeland, Peter W. Holocene Alpine Soils in Gneissic Cirque Deposits, Colorado Front Range. United States Gov. Print. Off, 1987.
Warning: These citations may not always be 100% accurate.