APA
,, . (1990). Seminar on present demographic trends and lifestyles in Europe. Strasbourg: Council of Europe.
Chicago
,, . 1990. Seminar on present demographic trends and lifestyles in Europe. Strasbourg: Council of Europe.
Harvard
,, . (1990). Seminar on present demographic trends and lifestyles in Europe. Strasbourg: Council of Europe.
MLA
,, . Seminar on present demographic trends and lifestyles in Europe. Strasbourg: Council of Europe. 1990.