APA (7e ed.) Bronvermelding

Research Institute of Agricultural Economics & Popp, J. (2008). Studies in agricultural economics: No. 108.

Chicago (17e ed.) Bronvermelding

Research Institute of Agricultural Economics en Jozsef Popp. Studies in Agricultural Economics: No. 108. 2008.

MLA (9e ed.) Bronvermelding

Research Institute of Agricultural Economics en Jozsef Popp. Studies in Agricultural Economics: No. 108. 2008.

Let op: Deze citaties zijn niet altijd 100% accuraat.