APA (7th ed.) Citation

Idelberger, K., & Wilharm, L. (2011). The world of footbridges: From the utilitarian to the spectacular. Ernst & Sohn.

Chicago Style (17th ed.) Citation

Idelberger, Klaus, and Linda Wilharm. The World of Footbridges: From the Utilitarian to the Spectacular. Berlin: Ernst & Sohn, 2011.

MLA (9th ed.) Citation

Idelberger, Klaus, and Linda Wilharm. The World of Footbridges: From the Utilitarian to the Spectacular. Ernst & Sohn, 2011.

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