APA (7th ed.) Citation

Maidl, B. (2008). Hardrock tunnel boring machines. Ernst & Sohn.

Chicago Style (17th ed.) Citation

Maidl, Bernhard. Hardrock Tunnel Boring Machines. Berlin: Ernst & Sohn, 2008.

MLA (9th ed.) Citation

Maidl, Bernhard. Hardrock Tunnel Boring Machines. Ernst & Sohn, 2008.

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