, F. o. s. f. (1994). Factors of soil formation - A fiftieth anniversary restrospective - Edited by Ronald Amudson. Soil Science Society of America Inc.
Čikaški stil citiranja (17. izdanje), Factors of soil formation. Factors of Soil Formation - A Fiftieth Anniversary Restrospective - Edited by Ronald Amudson. Soil Science Society of America Inc, 1994.
MLA način citiranja (8. izdanje), Factors of soil formation. Factors of Soil Formation - A Fiftieth Anniversary Restrospective - Edited by Ronald Amudson. Soil Science Society of America Inc, 1994.
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