Παραπομπή APA

(1998). Tunnel construction: Proceedings: 5th International Symposium on Tunnel Construction. Rotterdam, Netherlands ; Brookfield, Vt.: A.A. Balkema.

Παραπομπή Chicago Style

Tunnel Construction: Proceedings: 5th International Symposium On Tunnel Construction. Rotterdam, Netherlands ; Brookfield, Vt.: A.A. Balkema, 1998.

Παραπομπή MLA

Tunnel Construction: Proceedings: 5th International Symposium On Tunnel Construction. Rotterdam, Netherlands ; Brookfield, Vt.: A.A. Balkema, 1998.

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