APA引文

Sandys, D. Y. (2002). Congruence subgroups of genus zero of PSL2 (R).

Chicago Style (17th ed.) Citation

Sandys, Dini Yulia. Congruence Subgroups of Genus Zero of PSL2 (R). 2002.

MLA引文

Sandys, Dini Yulia. Congruence Subgroups of Genus Zero of PSL2 (R). 2002.

警告：这些引文格式不一定是100％准确.