Muntana Sillapaphan. 2008. The impacts of birth spacing on the health of mother and child. Field of Study Population and Development, National Institute of Development Administration;

Muntana Sillapaphan. The impacts of birth spacing on the health of mother and child. . Bangkok:National Institute of Development Administration, 2008.

Muntana Sillapaphan. (2008) The impacts of birth spacing on the health of mother and child . National Institute of Development Administration/Bangkok.