Não informado. (1954). Agricultural Engineers Yearbook. American Society of Agricultural Engineers.
Citação do estilo Chicago (17ª ed.)Não informado. Agricultural Engineers Yearbook. St. Joseph, Mich: American Society of Agricultural Engineers, 1954.
Citação MLA (8ª ed.)Não informado. Agricultural Engineers Yearbook. American Society of Agricultural Engineers, 1954.
警告：这些引文格式不一定是100％准确.