The only laws that matter are the current ones.I always look at different sources as the laws change over time. CA and NY have similar laws regarding breaking a lease agreement early. Where the problem exists for the landlord is collecting the judgement. Some tenants will just skip out not caring about the law or bad credit rating they will get if the landlord sues them.
Now everybody rise: here come the judge...
Jack posted a link to California Law from the state of California's own website in post #2.