APA (7th ed.) Citation

(2012). Hopf algebras and congruence subgroups / Yorck Sommerhäuser, Yongchang Zhu.

Chicago Style (17th ed.) Citation

Hopf Algebras and Congruence Subgroups / Yorck Sommerhäuser, Yongchang Zhu. 2012.

MLA (9th ed.) Citation

Hopf Algebras and Congruence Subgroups / Yorck Sommerhäuser, Yongchang Zhu. 2012.

Warning: These citations may not always be 100% accurate.