SpringerLink (Online service), Hammerli, B., Gritzalis, D., Wolthusen, S., & Bologna, S. (2013). Critical information infrastructure security: 6th International Workshop, CRITIS 2011, Lucerne, Switzerland, September 8-9, 2011, Revised Selected Papers. Springer Berlin Heidelberg.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)SpringerLink (Online service), Bernhard Hammerli, Dimitris Gritzalis, Stephen Wolthusen, و Sandro Bologna. Critical Information Infrastructure Security: 6th International Workshop, CRITIS 2011, Lucerne, Switzerland, September 8-9, 2011, Revised Selected Papers. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)SpringerLink (Online service), et al. Critical Information Infrastructure Security: 6th International Workshop, CRITIS 2011, Lucerne, Switzerland, September 8-9, 2011, Revised Selected Papers. Springer Berlin Heidelberg, 2013.