Ndanitsa, M. A., & Umar, I. S. (2007, December). Optimum Farm Plans for Fadama Farms in Niger State, Nigeria. Journal of Agricultural Extension.
芝加哥风格引文Ndanitsa, M A., 与 I S. Umar. "Optimum Farm Plans for Fadama Farms in Niger State, Nigeria." Journal of Agricultural Extension Dec. 2007.
MLA引文Ndanitsa, M A., 与 I S. Umar. "Optimum Farm Plans for Fadama Farms in Niger State, Nigeria." Journal of Agricultural Extension, Dec. 2007.
警告：这些引文格式不一定是100％准确.