de Man, H. 594/E.3.4/00236: Specimen met verslaggeving van voordracht "Outstanding social tendencies of the present day. An analysis by Hendrik de Man", in: "Social tendencies of the present day. An analysis and a programme. Being a report of the Third International Conference of Settlements, held at Amersfoort, Holland, in August 1929 [The International Association of Settlements, 1930, pp.32-48].
Lua i Stíl Chicago (17ú heag.)de Man, Hendrik. 594/E.3.4/00236: Specimen Met Verslaggeving Van Voordracht "Outstanding Social Tendencies of the Present Day. An Analysis by Hendrik De Man", in: "Social Tendencies of the Present Day. An Analysis and a Programme. Being a Report of the Third International Conference of Settlements, Held at Amersfoort, Holland, in August 1929 [The International Association of Settlements, 1930, Pp.32-48].
Lua MLA (8ú heag.)de Man, Hendrik. 594/E.3.4/00236: Specimen Met Verslaggeving Van Voordracht "Outstanding Social Tendencies of the Present Day. An Analysis by Hendrik De Man", in: "Social Tendencies of the Present Day. An Analysis and a Programme. Being a Report of the Third International Conference of Settlements, Held at Amersfoort, Holland, in August 1929 [The International Association of Settlements, 1930, Pp.32-48].