APA (7th ed.) Zitazioa

Bregt, A., & Bulens, J. (1992). Crop production potential of rural areas within the European Communities. 1: GIS and data model. WRR.

Chicago Style (17th ed.) Zitazioa

Bregt, A.K, eta J.D Bulens. Crop Production Potential of Rural Areas Within the European Communities. 1: GIS and Data Model. WRR, 1992.

MLA (9th ed.) Zitazioa

Bregt, A.K, eta J.D Bulens. Crop Production Potential of Rural Areas Within the European Communities. 1: GIS and Data Model. WRR, 1992.