3-bet this river or call?

[LImitPlayer]

Party Poker 5/10 Hold'em (6 max, 6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

I probably should have capped the turn?

Preflop: Hero is UTG with A/images/graemlins/club.gif, 9/images/graemlins/club.gif.
<font color="#CC3333">Hero raises</font>, MP calls, CO calls, Button calls, SB calls, BB calls.

Flop: (12 SB) T/images/graemlins/heart.gif, 5/images/graemlins/club.gif, 8/images/graemlins/diamond.gif <font color="#0000FF">(6 players)</font>
SB checks, BB checks, Hero checks, MP checks, <font color="#CC3333">CO bets</font>, Button calls, SB folds, BB calls, Hero calls, MP calls.

Turn: (8.50 BB) J/images/graemlins/club.gif <font color="#0000FF">(5 players)</font>
BB checks, Hero checks, <font color="#CC3333">MP bets</font>, CO calls, Button calls, BB calls, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">MP 3-bets</font>, CO folds, Button calls, BB folds, Hero calls.

River: (19.50 BB) T/images/graemlins/club.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP raises</font>, Button folds, Hero calls.

Final Pot: 23.50 BB

[wackjob]

Turn is ok, 3-bet the river &amp; call a cap.