source: Rental charges for any partial month shall be invoiced on a pro rata basis in respect of the rental charges payable for the relevant part of that month.
target: Rental charges for any partial month shall be invoiced on a pro rata basis. They shall be in respect of the rental charges payable. It is for the relevant part of that month.
references: Rental charges for any partial month shall be invoiced on a pro rata basis. They shall be in respect of the rental charges payable. It is for the relevant part of that month.