APA引文

Tan, C. (2001). Congruence subgroups of the modular group.

Chicago Style (17th ed.) Citation

Tan, Candy. Congruence Subgroups of the Modular Group. 2001.

MLA引文

Tan, Candy. Congruence Subgroups of the Modular Group. 2001.

警告：这些引文格式不一定是100％准确.