Cita APA (7th ed.)
Ritson, C. (1977). Agricultural economics: Principles and policy. St. Martin's Press.
Cita Chicago (17th ed.)
Ritson, Christopher. Agricultural Economics: Principles and Policy. New York: St. Martin's Press, 1977.
Cita MLA (9th ed.)
Ritson, Christopher. Agricultural Economics: Principles and Policy. St. Martin's Press, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.