Cita APA (7a ed.)

Harley, J. L., & Russell, R. S. (1979). The soil-root interface: Proceedings of an international symposium held in Oxford, England, March 28 to 31, 1978. Academic Press.

Cita Chicago Style (17a ed.)

Harley, J. L., y R. Scott Russell. The Soil-root Interface: Proceedings of an International Symposium Held in Oxford, England, March 28 to 31, 1978. London [etc.]: Academic Press, 1979.

Cita MLA (9a ed.)

Harley, J. L., y R. Scott Russell. The Soil-root Interface: Proceedings of an International Symposium Held in Oxford, England, March 28 to 31, 1978. Academic Press, 1979.