Lua APA (7ú heag.)
Keil, A., Goldack, A., LInden, S., Sander, C., & McKenna, C. (2013). Pedestrian bridges: Ramps, walkways, structures. Edition Detail.
Lua i Stíl Chicago (17ú heag.)
Keil, Andreas, Arndt Goldack, Sebastian LInden, Christiane Sander, agus Christina McKenna. Pedestrian Bridges: Ramps, Walkways, Structures. Munich: Edition Detail, 2013.
Lua MLA (9ú heag.)
Keil, Andreas, et al. Pedestrian Bridges: Ramps, Walkways, Structures. Edition Detail, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.