Purchase, H., & Archives, T. P. S. U. C. (2000). Effective information visualisation: A study of graph Drawing Aesthetics . . http://www.dcs.gla.ac.uk/publications/PAPERS/6464/iwc00.pdf.
Παραπομπή σε μορφή Chicago (17η εκδ.)Purchase, H.C, και The Pennsylvania State University CiteSeerX Archives. "Effective Information Visualisation: A Study of Graph Drawing Aesthetics . ." Http://www.dcs.gla.ac.uk/publications/PAPERS/6464/iwc00.pdf 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)Purchase, H.C, και The Pennsylvania State University CiteSeerX Archives. "Effective Information Visualisation: A Study of Graph Drawing Aesthetics . ." Http://www.dcs.gla.ac.uk/publications/PAPERS/6464/iwc00.pdf, 2000.
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