Cita APA (7a ed.)

Hansen, J. A., & Henriksen, K. (1989). Nitrogen in organic wastes applied to soils. Academic Press.

Cita Chicago Style (17a ed.)

Hansen, Jens Aage, y Kaj Henriksen. Nitrogen in Organic Wastes Applied to Soils. London ; San Diego: Academic Press, 1989.

Cita MLA (8a ed.)

Hansen, Jens Aage, y Kaj Henriksen. Nitrogen in Organic Wastes Applied to Soils. Academic Press, 1989.