APA
Nyarko P., Debpuur Cornelius, Pence Brian & Population Council. (2001). Immunization status and child survival in rural Ghana. New York: Population council.
Chicago
Nyarko Philomena, Debpuur Cornelius, Pence Brian and Population Council. 2001. Immunization status and child survival in rural Ghana. New York: Population council.
Harvard
Nyarko P., Debpuur Cornelius, Pence Brian and Population Council. (2001). Immunization status and child survival in rural Ghana. New York: Population council.
MLA
Nyarko Philomena, Debpuur Cornelius, Pence Brian and Population Council. Immunization status and child survival in rural Ghana. New York: Population council. 2001.