APA (7th ed.) Citation

Swaczyna, A., & Grassl, G. The new Nibelungen Bridge over the Danube at Regensburg.

Chicago Style (17th ed.) Citation

Swaczyna, Alfons, and Gerhard Grassl. The New Nibelungen Bridge over the Danube at Regensburg.

MLA (9th ed.) Citation

Swaczyna, Alfons, and Gerhard Grassl. The New Nibelungen Bridge over the Danube at Regensburg.

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