Não informado. (1993). Journal of Agricultural and Applied Economics. Southern Agricultural Economics Association.
Citação do estilo Chicago (17ª ed.)Não informado. Journal of Agricultural and Applied Economics. Auburn, Ala: Southern Agricultural Economics Association, 1993.
Citação MLA (8ª ed.)Não informado. Journal of Agricultural and Applied Economics. Southern Agricultural Economics Association, 1993.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.