Cita APA (7a ed.)

Howard, A. (2006). The Soil and Health: A Study of Organic Agriculture. University Press of Kentucky.

Cita Chicago Style (17a ed.)

Howard, Albert. The Soil and Health: A Study of Organic Agriculture. Lexington: University Press of Kentucky, 2006.

Cita MLA (8a ed.)

Howard, Albert. The Soil and Health: A Study of Organic Agriculture. University Press of Kentucky, 2006.