Tohutoro APA (7th ed.)
International Union of Soil Sciences, Soil Science Society of America, ebrary, Inc, World Congress of Soil Science, & Warkentin, B. P. (2006). Footprints in the soil: People and ideas in soil history. Elsevier.
Tohutoru Kātū Chicago (17th ed.)
International Union of Soil Sciences, Soil Science Society of America, Inc ebrary, World Congress of Soil Science, me Benno P. Warkentin. Footprints in the Soil: People and Ideas in Soil History. Amsterdam ; Boston: Elsevier, 2006.
Tohutoro MLA (9th ed.)
International Union of Soil Sciences, et al. Footprints in the Soil: People and Ideas in Soil History. Elsevier, 2006.
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