Dölling, R. (1974). The Conservation of historical monuments in the Federal Republic of Germany: The Conservation of historical monuments in the Federal Republic of Germany : history, organisation, tasks, case-histories : a contribution to European Architectural Heritage Year 1975. Bonn-Bad Godesberg: Inter Nationes.
Chicago stil citiranjaDölling, Regine. The Conservation of historical monuments in the Federal Republic of Germany: The Conservation of historical monuments in the Federal Republic of Germany : history, organisation, tasks, case-histories : a contribution to European Architectural Heritage Year 1975. Bonn-Bad Godesberg: Inter Nationes, 1974.
MLA stil citiranjaDölling, Regine. The Conservation of historical monuments in the Federal Republic of Germany: The Conservation of historical monuments in the Federal Republic of Germany : history, organisation, tasks, case-histories : a contribution to European Architectural Heritage Year 1975. Bonn-Bad Godesberg: Inter Nationes, 1974.