APA (7th ed.) Citation

Loughridge, R. H. (1914). Humus and humus-nitrogen in California soil columns. Univ. of California Press.

Chicago Style (17th ed.) Citation

Loughridge, Robert Hills. Humus and Humus-nitrogen in California Soil Columns. Berkeley, Calif: Univ. of California Press, 1914.

MLA (9th ed.) Citation

Loughridge, Robert Hills. Humus and Humus-nitrogen in California Soil Columns. Univ. of California Press, 1914.

Warning: These citations may not always be 100% accurate.