Dyfyniad APA

Winiwarter, V. (2012). The challenge of sustaining soils. Interdisciplinary perspectives 1.

Dyfyniad Arddull Chicago

Winiwarter, Verena. "The Challenge of Sustaining Soils." Interdisciplinary Perspectives 1 2012.

Dyfyniad MLA

Winiwarter, Verena. "The Challenge of Sustaining Soils." Interdisciplinary Perspectives 1 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.