California resident, Arizona income

I am a California resident.  I earned income in California and in Arizona.  I had no state taxes withheld from my Arizona paychecks.   My Arizona return shows taxes owed for the income reported in Arizona.  All my income from both California and Arizona is reported and taxes owed in California, too. I do not see a credit on my California return for taxes that I am having to pay to Arizona on my return. How can I claim that credit so I'm not paying income tax in both states?