Cita APA (7th ed.)
Whitson, A. (1914). Soil Survey of Fond du Lac County Wisconsin.
Cita Chicago (17th ed.)
Whitson, A.R. Soil Survey of Fond Du Lac County Wisconsin. Madison, 1914.
Cita MLA (9th ed.)
Whitson, A.R. Soil Survey of Fond Du Lac County Wisconsin. 1914.
Atenció: Aquestes cites poden no estar 100% correctes.