Gaya APA

Pender, M. J.. (1981). Tunnelling in Soft Ground - General Report (Session 2) . : s.n..

Gaya Chicago

Pender, M. J.. Tunnelling in Soft Ground - General Report (Session 2). : s.n., 1981. Computer Software.

Gaya MLA

Pender, M. J.. Tunnelling in Soft Ground - General Report (Session 2). : s.n., 1981. Computer Software.

Gaya Turabian

Pender, M. J.. Tunnelling in Soft Ground - General Report (Session 2). : s.n., 1981. Computer Software.