Reliability, validity, cronbach alpha figures for Method/measures section


My research is on people on particular visas in the US, i.e., immigrants and mostly Asians. In my methods section when I write about the measures, where do I get the Reliability, validity, cronbach alpha figures from?
Firstly, do I search for previous research on Asians or on 'immigrants' in general?
Secondly, Not much research on asians using the scales/measures I have used, viz,
1. Quality of Life Scale, Flanagan's
2. Satisfaction with Life Scale, Diener's
3. Liebowitz Disability Scale
4. Beck's Depression Inventory, II
5. BAI
6. Connor Davidson's Resilience Scale
7. Brief COPE

What do I do?
Please help!