APA (7th ed.) Citation

Krämer, A., Wilger, G., & Bongaerts, R. The 9-Euro-Ticket: Experiences, Impact Mechanisms and Follow-Up. Sciendo.

Chicago Style (17th ed.) Citation

Krämer, Andreas, Gerd Wilger, and Robert Bongaerts. The 9-Euro-Ticket: Experiences, Impact Mechanisms and Follow-Up. Sciendo.

MLA (9th ed.) Citation

Krämer, Andreas, et al. The 9-Euro-Ticket: Experiences, Impact Mechanisms and Follow-Up. Sciendo.

Warning: These citations may not always be 100% accurate.