Valley research Group. (2007). Survey results for community-based maternal neonatal care.
Chicago-viite (17. p.)Valley research Group. Survey Results for Community-based Maternal Neonatal Care. 2007.
MLA-viite (8. p.)Valley research Group. Survey Results for Community-based Maternal Neonatal Care. 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.