APA (7th ed.) Citation

Hopkins, C. G. (1910). Soil fertility and permanent agriculture. Ginn.

Chicago Style (17th ed.) Citation

Hopkins, Cyril G. Soil Fertility and Permanent Agriculture. Boston [u.a.]: Ginn, 1910.

MLA (9th ed.) Citation

Hopkins, Cyril G. Soil Fertility and Permanent Agriculture. Ginn, 1910.

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