APA
,, . (1991). Recent demographic development in Europe 1991. Strasbourg: Council of Europe.
Chicago
,, . 1991. Recent demographic development in Europe 1991. Strasbourg: Council of Europe.
Harvard
,, . (1991). Recent demographic development in Europe 1991. Strasbourg: Council of Europe.
MLA
,, . Recent demographic development in Europe 1991. Strasbourg: Council of Europe. 1991.