Long, H. C. (1934). Weed suppression by fertilizers and chemicals. H.C. Long.
芝加哥风格引文Long, H. C. Weed Suppression by Fertilizers and Chemicals. Surbiton, Surrey: H.C. Long, 1934.
MLA引文Long, H. C. Weed Suppression by Fertilizers and Chemicals. H.C. Long, 1934.
警告：这些引文格式不一定是100％准确.