Demographic trends 1950-1990.

MLA

Organisation for Economic Co-operation and Development. Demographic trends 1950-1990. Paris : Organisation for Economic Co-operation and Development ; [Washington, D.C.] : [sold by OECD Publications and Information Center], 1979.

APA

Organisation for Economic Co-operation and Development. (1979). Demographic trends 1950-1990. Paris : Organisation for Economic Co-operation and Development ; [Washington, D.C.] : [sold by OECD Publications and Information Center].

Chicago

Organisation for Economic Co-operation and Development. Demographic trends 1950-1990. Paris : Organisation for Economic Co-operation and Development ; [Washington, D.C.] : [sold by OECD Publications and Information Center], 1979.