In 1990 and motors having code 4A-GE the company used usual belts. It’s better to choose original or recommended by Toyota timing belt for Corolla 1.6. Nevertheless, you need optimal size for 1.6 motors installed in Corolla. Gas grid system in Toyota Corolla needs good timing belt to run. 113 of teeth are used in original part and it has 19 mm width.
So, make sure you buy for 1997 Toyota Corolla quality materials only. For 1.6 motor service in Toyota Corolla you might buy lots of analog accessories. But you surely need for 4A-FE motor number only 21 mm wide belt.