APA (7e ed.) Bronvermelding

Mart�inez Beltr�an, J. (1978). Drainage and reclamation of salt-affected soils, Bardenas area, Spain. International Institute for Land Reclamation and Improvement.

Chicago (17e ed.) Bronvermelding

Mart�inez Beltr�an, J. Drainage and Reclamation of Salt-affected Soils, Bardenas Area, Spain. Wageningen: International Institute for Land Reclamation and Improvement, 1978.

MLA (9e ed.) Bronvermelding

Mart�inez Beltr�an, J. Drainage and Reclamation of Salt-affected Soils, Bardenas Area, Spain. International Institute for Land Reclamation and Improvement, 1978.