Vijayaretnam และผู้แต่งคนอื่นๆ. 2009. Relationship between livelihood assets and economic security of rural households in Samurdhi programme, Ampara district, Sri Lanka. Faculty of Agriculture, Chiang Mai University;
Vijayaretnam และผู้แต่งคนอื่นๆ. (2009) Relationship between livelihood assets and economic security of rural households in Samurdhi programme, Ampara district, Sri Lanka . Chiang Mai University/Chiang Mai.
Vijayaretnam และผู้แต่งคนอื่นๆ. Relationship between livelihood assets and economic security of rural households in Samurdhi programme, Ampara district, Sri Lanka. . Chiang Mai:Chiang Mai University, 2009.
Vijayaretnam และผู้แต่งคนอื่นๆ. (2009) Relationship between livelihood assets and economic security of rural households in Samurdhi programme, Ampara district, Sri Lanka . Chiang Mai University/Chiang Mai.