Cita APA (7a ed.)

International Union of Soil Sciences, Soil Science Society of America, World Congress of Soil Science, & Warkentin, B. P. (2006). Footprints in the soil: People and ideas in soil history. Elsevier.

Cita Chicago Style (17a ed.)

International Union of Soil Sciences, Soil Science Society of America, World Congress of Soil Science, y Benno P. Warkentin. Footprints in the Soil: People and Ideas in Soil History. Amsterdam ; Boston: Elsevier, 2006.

Cita MLA (8a ed.)

International Union of Soil Sciences, et al. Footprints in the Soil: People and Ideas in Soil History. Elsevier, 2006.