APA (7th ed.) Citation

Ploey, J. d. (1989). Soil erosion map of western Europe. Catena Verlag.

Chicago Style (17th ed.) Citation

Ploey, Jan de. Soil Erosion Map of Western Europe. Cremlingen-Destedt, West Germany: Catena Verlag, 1989.

MLA (8th ed.) Citation

Ploey, Jan de. Soil Erosion Map of Western Europe. Catena Verlag, 1989.