Cita APA (7a ed.)

Ritson, C. (1977). Agricultural economics: Principles and policy. Crosby Lockwood Staples.

Cita Chicago Style (17a ed.)

Ritson, Christopher. Agricultural Economics: Principles and Policy. London: Crosby Lockwood Staples, 1977.

Cita MLA (9a ed.)

Ritson, Christopher. Agricultural Economics: Principles and Policy. Crosby Lockwood Staples, 1977.