SpringerLink (Online service) & Kratochvil, J. (1999). Graph Drawing: 7th International Symposium, GD'99, Stirin Castle, Czech Republic, September 15-19, 1999 Proceedings (1st ed. 1999.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/3-540-46648-7
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service) και Jan Kratochvil. Graph Drawing: 7th International Symposium, GD'99, Stirin Castle, Czech Republic, September 15-19, 1999 Proceedings. 1st ed. 1999. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-46648-7.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service) και Jan Kratochvil. Graph Drawing: 7th International Symposium, GD'99, Stirin Castle, Czech Republic, September 15-19, 1999 Proceedings. 1st ed. 1999. Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-46648-7.
