International Congress on Surface Active Substances, 5th Barcelona, 1968. (1969). Chimie, physique et applications pratique des agents de surface: Compte-rendu du Veme Congres International de la Detergence,Barcelone, 9 au 13 septembre 1968. Chemistry, physics and practical applications of surface active substances; proceedings of the Vth International Congress on surface active substances. Ediciones Unidas.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Congress on Surface Active Substances, 5th Barcelona, 1968. Chimie, Physique Et Applications Pratique Des Agents De Surface: Compte-rendu Du Veme Congres International De La Detergence,Barcelone, 9 Au 13 Septembre 1968. Chemistry, Physics and Practical Applications of Surface Active Substances; Proceedings of the Vth International Congress on Surface Active Substances. Barcelona: Ediciones Unidas, 1969.
Παραπομπή σε μορφή MLA (8th εκδ.)International Congress on Surface Active Substances, 5th Barcelona, 1968. Chimie, Physique Et Applications Pratique Des Agents De Surface: Compte-rendu Du Veme Congres International De La Detergence,Barcelone, 9 Au 13 Septembre 1968. Chemistry, Physics and Practical Applications of Surface Active Substances; Proceedings of the Vth International Congress on Surface Active Substances. Ediciones Unidas, 1969.