APA
(1990). Step-by-Step Guide to the estimation of Child Mortality. United Nations, New york: .
Chicago
1990. Step-by-Step Guide to the estimation of Child Mortality. United Nations, New york: .
Harvard
(1990). Step-by-Step Guide to the estimation of Child Mortality. United Nations, New york: .
MLA
Step-by-Step Guide to the estimation of Child Mortality. United Nations, New york: . 1990.