15-31-311. Receipts factor for receipts in this state. (1) Receipts from the sale of tangible personal property are in this state as provided for in Article IV, subsection (11), of 15-1-601.
(2) Receipts, other than receipts provided for in subsection (1), are in this state as provided for in Article IV, subsection (12), of 15-1-601.