Ozdemir, L. (1998). North American tunneling '98: : proccedings of the North American tunneling '98 Newport Beach, California, USA, 21-25 February 1998. Rotterdam: A. A. Balkema.
Παραπομπή Chicago StyleOzdemir, Levent. North American Tunneling '98: : Proccedings of the North American Tunneling '98 Newport Beach, California, USA, 21-25 February 1998. Rotterdam: A. A. Balkema, 1998.
Παραπομπή MLAOzdemir, Levent. North American Tunneling '98: : Proccedings of the North American Tunneling '98 Newport Beach, California, USA, 21-25 February 1998. Rotterdam: A. A. Balkema, 1998.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.