Παραπομπή APA

Knauer, U. (2011). Algebraic graph theory: Morphisms, monoids, and matrices. Walter De Gruyter.

Παραπομπή Chicago Style

Knauer, Ulrich. Algebraic Graph Theory: Morphisms, Monoids, and Matrices. Berlin ; Boston: Walter De Gruyter, 2011.

Παραπομπή MLA

Knauer, Ulrich. Algebraic Graph Theory: Morphisms, Monoids, and Matrices. Walter De Gruyter, 2011.