Pana Sri intuition. 2531. "Social and economic factors, some related to the use. Chemical pesticides Hmong hilltribe Hot District, Chiang Mai ". MSc Thesis Agricultural Extension College of Agriculture.
Intuition, ปาณะ Si. 2531. "Some socio-economic factors and the relationship with use. Pesticide of hill tribe, HOD District, Chiang Mai Province ".Master of Science in Agriculture University Graduate School of agriculture.