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Lua i Stíl Chicago (17ú heag.)SpringerLink (Online service), Francesco Ricci, Lorenzo Cantoni, agus Matthias Fuchs. Information and Communication Technologies in Tourism 2012: Proceedings of the International Conference in Helsingborg, Sweden, January 25-27, 2012. Vienna: Springer Vienna, 2012.
Lua MLA (8ú heag.)SpringerLink (Online service), et al. Information and Communication Technologies in Tourism 2012: Proceedings of the International Conference in Helsingborg, Sweden, January 25-27, 2012. Springer Vienna, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.