Shepherd, G. S. (1952). Agricultural price and income policy (3rd ed. (Rev. from Agricultural price policy).). Iowa State College Press.
Citação do estilo Chicago (17ª ed.)Shepherd, Geoffrey Seddon. Agricultural Price and Income Policy. 3rd ed. (Rev. from Agricultural price policy). Ames: Iowa State College Press, 1952.
Citação MLA (9ª ed.)Shepherd, Geoffrey Seddon. Agricultural Price and Income Policy. 3rd ed. (Rev. from Agricultural price policy). Iowa State College Press, 1952.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.