Sommerfeld, E. O. (1999). Iron and manganese removal handbook. American Water Works.
芝加哥风格引文Sommerfeld, Elmer O. Iron and Manganese Removal Handbook. Denver, Colo.: American Water Works, 1999.
MLA引文Sommerfeld, Elmer O. Iron and Manganese Removal Handbook. American Water Works, 1999.
警告：这些引文格式不一定是100％准确.