Ozdemir, L. (2001). North American tunneling 2002: Proccedings of the North American tunneling conference 2002, 18-22 May 2002, Seattle, Washington, USA. Lisse: A. A. Balkema.
Παραπομπή Chicago StyleOzdemir, Levent. North American Tunneling 2002: Proccedings of the North American Tunneling Conference 2002, 18-22 May 2002, Seattle, Washington, USA. Lisse: A. A. Balkema, 2001.
Παραπομπή MLAOzdemir, Levent. North American Tunneling 2002: Proccedings of the North American Tunneling Conference 2002, 18-22 May 2002, Seattle, Washington, USA. Lisse: A. A. Balkema, 2001.
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