Where can I find law citations and codes? and see case info online?

I have a horrible professor that has given me just a few days to find numerous cases by their citations & codes but he hasn't told us where online we can find them & access them. I need links and to be able to view the cases so I can write breifs on each of them but without having to have a pay subscription anywhere. I need the following: 22 C.A. 3d 267 (this is a "California Appellant Reports" case), West Pen Code � 784 ("West Penal Code"), 23 Cal Jur 3d � 110 ("California Jurisprudence Encyclopedia"), 16 Cal 4th 467 ("California Supreme Court Reports"). Please send links and thank you for any help you can give.