APA (7th ed.) Citation

Krömer, R. (2007). Tool and object: A history and philosophy of category theory. Birkhäuser.

Chicago Style (17th ed.) Citation

Krömer, Ralf. Tool and Object: A History and Philosophy of Category Theory. Basel [u.a.]: Birkhäuser, 2007.

MLA (9th ed.) Citation

Krömer, Ralf. Tool and Object: A History and Philosophy of Category Theory. Birkhäuser, 2007.

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