APA (7e ed.) Bronvermelding

American Underground Construction Association & Henn, R. W. (2003). AUA guidelines for backfilling and contact grouting of tunnels and shafts. American Society of Civil Engineers Thomas Telford Publications. https://doi.org/10.1061/9780784406342

Chicago (17e ed.) Bronvermelding

American Underground Construction Association en Raymond W. Henn. AUA Guidelines for Backfilling and Contact Grouting of Tunnels and Shafts. Reston, Virginia, London, UK: American Society of Civil Engineers Thomas Telford Publications, 2003. https://doi.org/10.1061/9780784406342.

MLA (9e ed.) Bronvermelding

American Underground Construction Association en Raymond W. Henn. AUA Guidelines for Backfilling and Contact Grouting of Tunnels and Shafts. American Society of Civil Engineers Thomas Telford Publications, 2003. https://doi.org/10.1061/9780784406342.