hi,
up to my knowledge integral of Phase Noise will give jitter in time domain, but my question should i consider reference spur also in this integration?

Thanks.

Reference spur will modulate your RJ (obtained from phase noise spectrum w/o ref. spur) at it's own frequency with peak amplitude determined by ref. spur magnitude,
this modulation jitter being known at deterministic jitter, as its origin (ie the origin of ref spur) can be traced back to definite circuit elements/processes.

Total resultant jitter will include both RJ & DJ.

--
Mayank.