APA aipamena

Ritson,Christopher. (1977). Agricultural economics: Principles and policy. Granada Publishing.

Chicago Style aipamena

Ritson,Christopher. Agricultural Economics: Principles and Policy. London: Granada Publishing, 1977.

MLA aipamena

Ritson,Christopher. Agricultural Economics: Principles and Policy. Granada Publishing, 1977.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.