APA (7th ed.) Citation

Boruvka, O. (1975). Foundations of the theory of groupoids and groups. Birkhäuser.

Chicago Style (17th ed.) Citation

Boruvka, Otakar. Foundations of the Theory of Groupoids and Groups. Basel [u.a.]: Birkhäuser, 1975.

MLA (9th ed.) Citation

Boruvka, Otakar. Foundations of the Theory of Groupoids and Groups. Birkhäuser, 1975.

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