APA
United Nations. Social Affairs (Dept. of-), United Nations. Social Affairs (Dept. of-), . (1955). Age and Sex patterns of mortality. NY: "United Nations, Social Affaris USA ".
Chicago
United Nations. Social Affairs (Dept. of-), United Nations. Social Affairs (Dept. of-), . 1955. Age and Sex patterns of mortality. NY: "United Nations, Social Affaris USA ".
Harvard
United Nations. Social Affairs (Dept. of-), United Nations. Social Affairs (Dept. of-), . (1955). Age and Sex patterns of mortality. NY: "United Nations, Social Affaris USA ".
MLA
United Nations. Social Affairs (Dept. of-), United Nations. Social Affairs (Dept. of-), . Age and Sex patterns of mortality. NY: "United Nations, Social Affaris USA ". 1955.