John, F. (1982). Partial differential equations (Fourth edition.). Springer-Verlag.
芝加哥风格引文John, Fritz. Partial Differential Equations. Fourth edition. New York: Springer-Verlag, 1982.
MLA引文John, Fritz. Partial Differential Equations. Fourth edition. Springer-Verlag, 1982.
警告：这些引文格式不一定是100％准确.