There are quite a number of free automated citation generators available on the Web; for examp
easybib -- free only for MLA citation
bibme -- limited free APA, MLA and Chicago citation
KnightCite -- free APA, MLA and Chicago citation
mybib.com -- free APA, MLA, Chicago , AMA and many other citations
zoterobib -- free APA, MLA, Chicago , AMA, CSE and many other citations; good tool to create, verify, or convert your citation style.
Note: always check for accuracy.