Sky Sports News quotes him as saying: "The players worked exceptionally hard. I hope people saw a bit of a difference today and a bit of a structure and a game plan which we can develop going forward.
"The first half was really pleasing. We looked a threat going forward, we created a few opportunities and we were nice and compact without the ball.
"We hung on in there well during the last few minutes, which were a bit scary, and it is a great result for the football club."
The result moves Cardiff up to 12th place in the Championship table, while Forest drop down to fifth.