Where to show tax refund in itr 3

Hello,

I am a salaried individual. In last financial year, I received a tax refund of Rs. 16100 + interest of Rs. 320 from ITD.

I believe I have to show Rs. 320 under head of "Income from other sources" and pay tax on it.

But where do I have to show the refund amount of Rs. 16100 in my ITR ? If yes, which sheet ?

I will be using ITR-3 for AY 2017-18.

Thanks in advance.