Ryerson, C. C. (1979). A moisture-based model for calculating daily changes in seasonal soil frost depth. C.W. Thornthwaite Associates, Laboratory of Climatology ; University of Delaware, Center for Climatic Research.
Chicago Style (17th ed.) CitationRyerson, Charles Curtis. A Moisture-based Model for Calculating Daily Changes in Seasonal Soil Frost Depth. Elmer, N.J. : Newark, Del.: C.W. Thornthwaite Associates, Laboratory of Climatology ; University of Delaware, Center for Climatic Research, 1979.
MLA (9th ed.) CitationRyerson, Charles Curtis. A Moisture-based Model for Calculating Daily Changes in Seasonal Soil Frost Depth. C.W. Thornthwaite Associates, Laboratory of Climatology ; University of Delaware, Center for Climatic Research, 1979.
Warning: These citations may not always be 100% accurate.