APA

Barton N., . (1978). Recent experiences with the Q-system of tunnel support design. Exploration for Rock Engineering, Symposium, Johannesburg, 1976. Vol 1, s 107-17). : Norges Geotekniske Institutt. Publikasjon.

Chicago

Barton N, . 1978. Recent experiences with the Q-system of tunnel support design. Exploration for Rock Engineering, Symposium, Johannesburg, 1976. Vol 1, s 107-17). : Norges Geotekniske Institutt. Publikasjon.

Harvard

Barton N., . (1978). Recent experiences with the Q-system of tunnel support design. Exploration for Rock Engineering, Symposium, Johannesburg, 1976. Vol 1, s 107-17). : Norges Geotekniske Institutt. Publikasjon.

MLA

Barton N, . Recent experiences with the Q-system of tunnel support design. Exploration for Rock Engineering, Symposium, Johannesburg, 1976. Vol 1, s 107-17). : Norges Geotekniske Institutt. Publikasjon. 1978.