2015 New York Laws
RPP - Real Property
Article 7 - (Real Property) Landlord and Tenant
232-A - Notice to terminate monthly tenancy or tenancy from month to month in the city of New York.

  232-a. Notice to terminate monthly tenancy or tenancy from month to
  month in the city of New York. No monthly tenant, or tenant  from  month
  to  month, shall hereafter be removed from any lands or buildings in the
  city of New York on the grounds of holding over his term unless at least
  thirty days before the expiration of the term the landlord or his  agent
  serve  upon the tenant, in the same manner in which a notice of petition
  in summary proceedings is now allowed to be served by law, a  notice  in
  writing  to the effect that the landlord elects to terminate the tenancy
  and that unless the tenant removes from such  premises  on  the  day  on
  which  his  term  expires the landlord will commence summary proceedings
  under the statute to remove such tenant therefrom.