need help....questionnaire issue

Started by EmanO
This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.

EmanO

Full Member
7+ Year Member
Advertisement - Members don't see this ad
Hello Guys,
I want to know is it ok if i used a questionnaire which has been used in previous published researches???
and if ok, how i can get the full questionnaire from the authors?

Thank you....