Square and MYOB Inventory

We are a company that sells books. We have recently used square as our POS as we sell at fares/events. The Amaka integration allow sales to be captured into square, however inventory is not accounted for. I believe a manual inventory adjustment for each book would be able to account for the sold stock but how would I be able to then see my sales for each indivial item sold? I am selling the stock when I adjust the inventory so want this to be captured. Also noting that the book has already been paid for via Square. Cheers