APA (7th ed.) Citation

Skupień, Z., & Borowiecki, M. (1989). Combinatorics and graph theory. PWN-Polish Scientific Publishers.

Chicago Style (17th ed.) Citation

Skupień, Zdzisław, and M. Borowiecki. Combinatorics and Graph Theory. Warszawa: PWN-Polish Scientific Publishers, 1989.

MLA (9th ed.) Citation

Skupień, Zdzisław, and M. Borowiecki. Combinatorics and Graph Theory. PWN-Polish Scientific Publishers, 1989.

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