Ritson, C. (1977). Agricultural economics: Principles and policy. Crosby Lockwood Staples.
Citazione stile Chigago Style (17a edizione)Ritson, Christopher. Agricultural Economics: Principles and Policy. London: Crosby Lockwood Staples, 1977.
Citatione MLA (8a ed.)Ritson, Christopher. Agricultural Economics: Principles and Policy. Crosby Lockwood Staples, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.