Panee Vong-ek and others. 2006. A survey of pregnancy, birth, and early life in Kanchanaburi project (2003). Nakhon Prathom:Institute for Population and Social Research Mahidol University;

Panee Vong-ek and others. A survey of pregnancy, birth, and early life in Kanchanaburi project (2003). Nakhon Prathom:Institute for Population and Social Research Mahidol University, 2006. Print.

Panee Vong-ek and others. (2006) A survey of pregnancy, birth, and early life in Kanchanaburi project (2003). Institute for Population and Social Research Mahidol University:Nakhon Prathom.