Decha Karnjanangkura และผู้แต่งคนอื่นๆ. (1996) Factors affecting landlessness and employment among rural people in Lamphun and Phichit Provinces. National Institute of Development Administration:ม.ป.ท.Decha Karnjanangkura และผู้แต่งคนอื่นๆ. 1996. Factors affecting landlessness and employment among rural people in Lamphun and Phichit Provinces. ม.ป.ท.:National Institute of Development Administration;Decha Karnjanangkura และผู้แต่งคนอื่นๆ. Factors affecting landlessness and employment among rural people in Lamphun and Phichit Provinces. ม.ป.ท.:National Institute of Development Administration, 1996. Print.