Double taxed income with three states (CA/GA/MA)

Hello,

 

I am a graduate student who has worked in two states (Georgia as a teaching assistant, and Internship in California). My permanent residence is my parents home in Massachusetts and I have not made any earnings in Massachusetts. It seems like I am being double taxed in massachusetts from the income in california and georgia for state tax, as I set up the turbotax state tax system for all three states. How do I make sure I am not being double taxed?

 

Thank you.