MLA

Orlik, Peter, Gunnar Fløystad, and Volkmar Welker. Algebraic Combinatorics. Springer Berlin Heidelberg, 2007.

APA

Orlik, P., Fløystad, G., & Welker, V. (2007). Algebraic Combinatorics. Springer Berlin Heidelberg.

Chicago

Orlik, Peter, Gunnar Fløystad, and Volkmar Welker. Algebraic Combinatorics. : Springer Berlin Heidelberg, 2007.