Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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