Cita APA (7th ed.)

Hrris, J. M., & Hrris, J. M. (2008). Combinatorics and graph theory (2nd ed.). Springer.

Cita Chicago (17th ed.)

Hrris, John M., i John M. Hrris. Combinatorics and Graph Theory. 2nd ed. New York: Springer, 2008.

Cita MLA (9th ed.)

Hrris, John M., i John M. Hrris. Combinatorics and Graph Theory. 2nd ed. Springer, 2008.