Petrovskiĭ, I. G. (1967). Partial differential equations. Iliffe Books.
芝加哥风格引文Petrovskiĭ, I. G. Partial Differential Equations. London: Iliffe Books, 1967.
MLA引文Petrovskiĭ, I. G. Partial Differential Equations. Iliffe Books, 1967.
警告：这些引文格式不一定是100％准确.