Citazione Stile APA (7a Edizione)

North American Tunneling Conference Indianapolis, Ind., ebrary, Inc, & Fowler, M. (2012). North American Tunneling: 2012 proceedings. Society for Mining, Metallurgy and Exploration.

Citazione stile Chigago Style (17a edizione)

North American Tunneling Conference Indianapolis, Ind., Inc ebrary, e Matthew Fowler. North American Tunneling: 2012 Proceedings. Englewood, Colo.: Society for Mining, Metallurgy and Exploration, 2012.

Citatione MLA (9a ed.)

North American Tunneling Conference Indianapolis, Ind., et al. North American Tunneling: 2012 Proceedings. Society for Mining, Metallurgy and Exploration, 2012.