APA-referens (7:e uppl.)
Christ, J. P. (2012). Innovative places in Europe: Research clustering, co-patenting networks and the growth of regions. Peter Lang.
Chicago-referens (17:e uppl.)
Christ, Julian Phillip. Innovative Places in Europe: Research Clustering, Co-patenting Networks and the Growth of Regions. Frankfurt am Main ; New York: Peter Lang, 2012.
MLA-referens (9:e uppl.)
Christ, Julian Phillip. Innovative Places in Europe: Research Clustering, Co-patenting Networks and the Growth of Regions. Peter Lang, 2012.
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