APA (7th ed.) Citation

Boardman, J., & Poesen, J. (2006). Soil erosion in Europe. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Boardman, John, and Jean Poesen. Soil Erosion in Europe. Chichester, England ; Hoboken, NJ: John Wiley & Sons, 2006.

MLA (9th ed.) Citation

Boardman, John, and Jean Poesen. Soil Erosion in Europe. John Wiley & Sons, 2006.