Happ, H. H. (1980). Piecewise methods and applications to power systems. Wiley.
芝加哥风格引文Happ, H. H. Piecewise Methods and Applications to Power Systems. New York: Wiley, 1980.
MLA引文Happ, H. H. Piecewise Methods and Applications to Power Systems. Wiley, 1980.
警告：这些引文格式不一定是100％准确.