Colbourn, C. J., & Colbourn, M. J. The chromatic index of cyclic Steiner 2-designs. Wiley.
Chicago Style (17th ed.) CitationColbourn, Charles J., and Marlene J. Colbourn. The Chromatic Index of Cyclic Steiner 2-designs. Wiley.
MLA (9th ed.) CitationColbourn, Charles J., and Marlene J. Colbourn. The Chromatic Index of Cyclic Steiner 2-designs. Wiley.
Warning: These citations may not always be 100% accurate.