International Potash Intitute. (1982). Optimizing yields the role of fertilizers (Primera edición.). International Potash Intitute.
芝加哥风格引文International Potash Intitute. Optimizing Yields the Role of Fertilizers. Primera edición. Bern: International Potash Intitute, 1982.
MLA引文International Potash Intitute. Optimizing Yields the Role of Fertilizers. Primera edición. International Potash Intitute, 1982.
警告：这些引文格式不一定是100％准确.