, F. o. s. f. Factors of soil formation#A fiftieth anniversary restrospective#Edited by Ronald Amudson. Soil Science Society of America Inc.
Chicago-referens (17:e uppl.), Factors of soil formation. Factors of Soil Formation#A Fiftieth Anniversary Restrospective#Edited by Ronald Amudson. Soil Science Society of America Inc.
MLA-referens (8:e uppl.), Factors of soil formation. Factors of Soil Formation#A Fiftieth Anniversary Restrospective#Edited by Ronald Amudson. Soil Science Society of America Inc.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.