There are currently two types of quotas, one is the 99 quota, and the other is the 08 quota. Because different units have different regulations, they are both still in use at the same time. The 08 quota is only sold in Jianxin Bookstore. I don’t know where you are, but there is a larger one in Eling. For the 99 quota, you can only buy it at Shicheng Bookstore, which is also in Eling, not far away. Buy according to your own needs. But companies generally have them, so there is no need to buy them if you don’t have a lot of private work.
If you want to learn about budgeting, there are too many books. You can also go to various architectural bookstores in Eling, where there are relatively more professional books.
Hope this helps