Não informado. (1972). French techniques: Building, civil engineering and townplannin. Centre National du Commerce Exterieur.
Chicago-viite (17. p.)Não informado. French Techniques: Building, Civil Engineering and Townplannin. Paris: Centre National du Commerce Exterieur, 1972.
MLA-viite (8. p.)Não informado. French Techniques: Building, Civil Engineering and Townplannin. Centre National du Commerce Exterieur, 1972.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.