R.I. Gen. Laws § 34-18.1-7: Time of termination of letting.

The time agreed upon in a definite letting covered by this chapter shall be the time of the termination thereof for all purposes; and if no time of termination has been agreed upon, it shall be deemed a letting from award year; provided, however, that in any case of a letting at a certain rate per month without any reference as to time, the letting shall be deemed a letting from month to month; and provided, further, that in any case of a letting at a certain rate per week without any other reference as to time, the letting shall be deemed a letting from week to week.