APA Edition Citation

Maidl, B. (2008). Hardrock tunnel boring machines. Ernst and sohn.

Chicago Edition Citation

Maidl, Bernhard...[et.al]. Hardrock Tunnel Boring Machines. Berlin: Ernst and sohn, 2008.

MLA Edition Citation

Maidl, Bernhard...[et.al]. Hardrock Tunnel Boring Machines. Ernst and sohn, 2008.

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