APA
International Seminar on the improvement of Housing Conditions and the rehabilitation of Historic, United Nations Centre for Human Settlements, . (1990). Proceedings and final report of the International Seminar on the improvement of housing conditions and the rehabilitation of historic centres 109-12 September 1990, IAA" Santo Kiriko" Creativity Centre, Assenorgrad, Bulgaria. Nairobi: UNCHS (Habitat).
Chicago
International Seminar on the improvement of Housing Conditions and the rehabilitation of Historic, United Nations Centre for Human Settlements, . 1990. Proceedings and final report of the International Seminar on the improvement of housing conditions and the rehabilitation of historic centres 109-12 September 1990, IAA" Santo Kiriko" Creativity Centre, Assenorgrad, Bulgaria. Nairobi: UNCHS (Habitat).
Harvard
International Seminar on the improvement of Housing Conditions and the rehabilitation of Historic, United Nations Centre for Human Settlements, . (1990). Proceedings and final report of the International Seminar on the improvement of housing conditions and the rehabilitation of historic centres 109-12 September 1990, IAA" Santo Kiriko" Creativity Centre, Assenorgrad, Bulgaria. Nairobi: UNCHS (Habitat).
MLA
International Seminar on the improvement of Housing Conditions and the rehabilitation of Historic, United Nations Centre for Human Settlements, . Proceedings and final report of the International Seminar on the improvement of housing conditions and the rehabilitation of historic centres 109-12 September 1990, IAA" Santo Kiriko" Creativity Centre, Assenorgrad, Bulgaria. Nairobi: UNCHS (Habitat). 1990.
