APA

,, . (1991). Historic towns and tourism : Working documents and conclusions. Strasbourg: Council of Europe.

Chicago

,, . 1991. Historic towns and tourism : Working documents and conclusions. Strasbourg: Council of Europe.

Harvard

,, . (1991). Historic towns and tourism : Working documents and conclusions. Strasbourg: Council of Europe.

MLA

,, . Historic towns and tourism : Working documents and conclusions. Strasbourg: Council of Europe. 1991.