United States. Bureau of Soils. (1910). Reference list on electric fixation of atmospheric nitrogen and use of calcium cyanamid and calcium nitrate on soils. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Soils. Reference List on Electric Fixation of Atmospheric Nitrogen and Use of Calcium Cyanamid and Calcium Nitrate on Soils. [Washington]: GPO, 1910.
MLA (9th ed.) CitationUnited States. Bureau of Soils. Reference List on Electric Fixation of Atmospheric Nitrogen and Use of Calcium Cyanamid and Calcium Nitrate on Soils. GPO, 1910.
Warning: These citations may not always be 100% accurate.