APA (7e ed.) Bronvermelding

Drummond, H. E., & Goodwin, J. W. (2014). Agricultural economics (3rd ed.). Prentice Hall.

Chicago (17e ed.) Bronvermelding

Drummond, H. Evan, en John W. Goodwin. Agricultural Economics. 3rd ed. Upper Saddle River, NJ: Prentice Hall, 2014.

MLA (9e ed.) Bronvermelding

Drummond, H. Evan, en John W. Goodwin. Agricultural Economics. 3rd ed. Prentice Hall, 2014.