Sopit Pongsaree และผู้แต่งคนอื่นๆ. (2001) Women's leadership in participation in environmental conservation in Northern Thailand. National Institute of Development Administration:ม.ป.ท.Sopit Pongsaree และผู้แต่งคนอื่นๆ. 2001. Women's leadership in participation in environmental conservation in Northern Thailand. ม.ป.ท.:National Institute of Development Administration;Sopit Pongsaree และผู้แต่งคนอื่นๆ. Women's leadership in participation in environmental conservation in Northern Thailand. ม.ป.ท.:National Institute of Development Administration, 2001. Print.