International Seminar on the Preservation and Rehabilitation of Historic Districts, Towns and Monuments in some developed countries and their relevance to developing countries (Assenovgrad). (1989). Preservation and rehabilitation of historic districts, towns and monuments: Proceedings and final report. UNCHS (Habitat).
Cita Chicago Style (17a ed.)International Seminar on the Preservation and Rehabilitation of Historic Districts, Towns and Monuments in some developed countries and their relevance to developing countries (Assenovgrad). Preservation and Rehabilitation of Historic Districts, Towns and Monuments: Proceedings and Final Report. Nairobi: UNCHS (Habitat), 1989.
Cita MLA (9a ed.)International Seminar on the Preservation and Rehabilitation of Historic Districts, Towns and Monuments in some developed countries and their relevance to developing countries (Assenovgrad). Preservation and Rehabilitation of Historic Districts, Towns and Monuments: Proceedings and Final Report. UNCHS (Habitat), 1989.