(2020, 01. October). ESSMA Case study: How do the fans return to sports grounds? Zugriff unter https://essma.eu/storage/app/media/Condensed%20ESSMA%20case%20study_compressed.pdf
APA-Zitierstil (7. Ausg.)(2020). ESSMA Case study: How do the fans return to sports grounds? European Stadium & Safety Management Association.
Chicago-Zitierstil (17. Ausg.)ESSMA Case Study: How Do the Fans Return to Sports Grounds? European Stadium & Safety Management Association, 2020.
MLA-Zitierstil (9. Ausg.)ESSMA Case Study: How Do the Fans Return to Sports Grounds? European Stadium & Safety Management Association, 2020.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.