Part time income in itr

What is the nature of Part Time income ?
Generally, we consider it as a income from other sources

It is from part time work of accounts 

If part time job in regular basis then it can be shown under salary. If there is contract type job then take in Income from other sources.

Generally in part time work the employer do not issue form - 16 , then how to file in ITR -1 as a salary income.

Will it to be shown as other income ?

Yes show as other income