توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Sys, C., Vanelslander, T., Ponnekeblom, G., & Crius Group, H. (2011). Future challenges for inland navigation: A scientific appraisal of the consequences of possible strategic and economic developments up to 2030. University Press Antwerp.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Sys, Christa, Thierry Vanelslander, Gentbrugge Ponnekeblom, و Hulshout Crius Group. Future Challenges for Inland Navigation: A Scientific Appraisal of the Consequences of Possible Strategic and Economic Developments Up to 2030. Brussels, Belgium: University Press Antwerp, 2011.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Sys, Christa, et al. Future Challenges for Inland Navigation: A Scientific Appraisal of the Consequences of Possible Strategic and Economic Developments Up to 2030. University Press Antwerp, 2011.