Maidl, B., Thewes, M., & Maidl, U. (2013). Handbook of tunnel engineering (First edition.). Ernst & Sohn.
Citazione stile Chigago Style (17a edizione)Maidl, Bernhard, Markus Thewes, e Ulrich Maidl. Handbook of Tunnel Engineering. First edition. Berlin: Ernst & Sohn, 2013.
Citatione MLA (9a ed.)Maidl, Bernhard, et al. Handbook of Tunnel Engineering. First edition. Ernst & Sohn, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.