Gaya APA

Matallana, , G, A. (1970). The Laboratory Behaviour of a Medium-Scale Rigid Tied Back Retaining Wall in Sand . : s.n..

Gaya MLA

Matallana, , Gustavo, A.. "The Laboratory Behaviour of a Medium-Scale Rigid Tied Back Retaining Wall in Sand". : s.n., 1970. Computer Software.