There are a few local shops in district centre
There are plenty of them but it's best that you buy them online because due to pandemic, some of them are temporarily closed.
Tyagi Stationers. But I would rather ask you to shop online. Stat safe :)
You can shop online at this time. It would be better ! Moreover you can go to Shaktistationers
1.Tyagi Book Depot & Stationers. Shop No-Wz-30/2 Vikaspuri
2.Angels Books & Gift Shop. Dda Market Vikaspuri
There are a few stores in Reliance mall where you can shop for the same
Akash stationery & book shop