APA
(1989). From pyramid to pilar: population change and social security in Europe. Geneva: Geneva, International Labour Office.
Chicago
1989. From pyramid to pilar: population change and social security in Europe. Geneva: Geneva, International Labour Office.
Harvard
(1989). From pyramid to pilar: population change and social security in Europe. Geneva: Geneva, International Labour Office.
MLA
From pyramid to pilar: population change and social security in Europe. Geneva: Geneva, International Labour Office. 1989.
