Apologies if this is the wrong forum (I really didn't know where else to post this question).
Is there an electronic version of the Pantone Formula Guide? What I need in particular is the mixing percentages. I intend to manually mix inks to achieve the desired colours.
I could buy the formula guide (~usd100, physical version), but if there's an electronic version it'd be much easier.
There's an iphone app ($10), which I downloaded, but it doesn't have the mixing percentages.