APA (7th ed.) Citation

Hellström, B. (1955). Friction losses in unlined rock tunnels. Institution of Hydraulics, Royal Institute of Technology.

Chicago Style (17th ed.) Citation

Hellström, B. Friction Losses in Unlined Rock Tunnels. Stockholm: Institution of Hydraulics, Royal Institute of Technology, 1955.

MLA (9th ed.) Citation

Hellström, B. Friction Losses in Unlined Rock Tunnels. Institution of Hydraulics, Royal Institute of Technology, 1955.

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