APA
United Nations, . (2014). Principles and recommendations for a vital statistics system, Revision 3. Kigali: United Nations.
Chicago
United Nations, . 2014. Principles and recommendations for a vital statistics system, Revision 3. Kigali: United Nations.
Harvard
United Nations, . (2014). Principles and recommendations for a vital statistics system, Revision 3. Kigali: United Nations.
MLA
United Nations, . Principles and recommendations for a vital statistics system, Revision 3. Kigali: United Nations. 2014.