Hello Wadahun

If you are asking with Entrance point of view then there are various materials and books available.

Microeconomics: Hal Varian (Intermediate Microeconomics), Hal Varian Workbook, Osborne (for game theory), Nicholson and Snyder (for production theory)

Macroeconomics: Dornbusch and Fischer, O. Blanchard, Development Economics by Debraj Ray (for Solow and Harrod Domar growth models)

Econometrics and Statistics: Gujarati’s Introductory Econometrics, Degroot and Schervish.

Mathematics: Sydsaeter and Hammond.

Some other study materials available :

Study Material For Economics Entrance Exam For DSE, ISI MSQE, JNU, MSE, IGIDR. Spiral-bound. SOURAV SIR'S CLASSES.

Delhi University M.A. Economics Entrance Test Guide. Paperback. RPH Editorial Board.