(1976). Transportation tunneling program review: First annual conference on DOT research and development in tunneling technology, Williamsburg, Virginia, May 4-7, 1975 / prepared for U.S. Department of Transportation, Office of the Secretary.
Čikaški stil citiranja (17. izdanje)Transportation Tunneling Program Review: First Annual Conference on DOT Research and Development in Tunneling Technology, Williamsburg, Virginia, May 4-7, 1975 / Prepared for U.S. Department of Transportation, Office of the Secretary. 1976.
MLA način citiranja (9. izdanje)Transportation Tunneling Program Review: First Annual Conference on DOT Research and Development in Tunneling Technology, Williamsburg, Virginia, May 4-7, 1975 / Prepared for U.S. Department of Transportation, Office of the Secretary. 1976.