APA
(1972). interim report on conditions and trends of fertility in the world, 1960-1965. United nations, New york: .
Chicago
1972. interim report on conditions and trends of fertility in the world, 1960-1965. United nations, New york: .
Harvard
(1972). interim report on conditions and trends of fertility in the world, 1960-1965. United nations, New york: .
MLA
interim report on conditions and trends of fertility in the world, 1960-1965. United nations, New york: . 1972.