Não informado. (1945). Agriculture abroad. Department of Agriculture, Economics Division of the Marketing Service.
Citação do estilo Chicago (17ª ed.)Não informado. Agriculture Abroad. Ottawa: Department of Agriculture, Economics Division of the Marketing Service, 1945.
Citação MLA (8ª ed.)Não informado. Agriculture Abroad. Department of Agriculture, Economics Division of the Marketing Service, 1945.
警告：這些引文格式不一定是100％准確.