Hilgard, E. W. (1906). Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions. The Macmillan company; Macmillan & co., ltd..
Chicago Style (17th ed.) CitationHilgard, Eugene W. Soils, Their Formation, Properties, Composition, and Relations to Climate and Plant Growth in the Humid and Arid Regions. New York : London: The Macmillan company; Macmillan & co., ltd., 1906.
MLA (9th ed.) CitationHilgard, Eugene W. Soils, Their Formation, Properties, Composition, and Relations to Climate and Plant Growth in the Humid and Arid Regions. The Macmillan company; Macmillan & co., ltd., 1906.
Warning: These citations may not always be 100% accurate.