I have done ISCA from study material and Practice material once....I am planning to do 3-4 revisions from just practice manual...is it enough to pass or score exemption? Do I need to refer to a reference book ?
No need to ref. any book, you just need to memorize all the points, after 3 4 revision you will be able to memorize.
apart from this, there are few topics on which question have not been included in PM. As you have done SM and PM both so you may be aware of those topics. Cover these topics + PM will be enough to get the exemption.
no need to ref . jus revise wt u read before from sm only.. no need to see pm Actually if u read in sm.. so ..only make a note of points and headings,subheadings.. while doing revision ..it helps to recollect the points ..