Hexel, E., & Harant, J. (1999). Cycles and colourings '97: Proceedings of the 6th workshop, Stará Lesná, September 7 - 12, 1997 ([1st ed.].). Slovak Academy of Sciences.
Citace podle Chicago (17th ed.)Hexel, Erhard, a Jochen Harant. Cycles and Colourings '97: Proceedings of the 6th Workshop, Stará Lesná, September 7 - 12, 1997. [1st ed.]. Bratislava: Slovak Academy of Sciences, 1999.
Citace podle MLA (9th ed.)Hexel, Erhard, a Jochen Harant. Cycles and Colourings '97: Proceedings of the 6th Workshop, Stará Lesná, September 7 - 12, 1997. [1st ed.]. Slovak Academy of Sciences, 1999.
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