APA引文
Perko, L. (2001). Differential equations and dynamical systems (3rd ed.). Springer.
芝加哥风格引文
Perko, Lawrence. Differential Equations and Dynamical Systems. 3rd ed. New Delhi: Springer, 2001.
MLA引文
Perko, Lawrence. Differential Equations and Dynamical Systems. 3rd ed. Springer, 2001.
警告：这些引文格式不一定是100％准确.