Gaya APA

Maidl, B. et al (2014). HANDBOOK OF TUNNEL ENGINEERING II: Basics and Additional Services for Design and Construction . Germany: Ernst & Sohn.

Gaya MLA

Maidl, Bernhard. et al. "HANDBOOK OF TUNNEL ENGINEERING II: Basics and Additional Services for Design and Construction". Germany: Ernst & Sohn, 2014. Text.