improving my act score

<p>I got the following scores:
composite:30
reading:32
english:33
maths:30
science:25
I used the following books:
barrons act 36
the real act prep guide.
what should i do to improve my score by atleast 4 points.
should i buy other books like princeton review cracking the act or princeton review 1296 act questions or should i go through barrons act 36 and the real act prep guide
once again.</p>

<p>Barrons book is good. Practice more and you will get increment in marks.</p>