At what pace are you running the 200m? HIIT has 200m with 400m recovery x 6. 30 secs would be flat out sprint for me. No way could I recover and do it again after 30 secs. (though of course I'm not a young male sprinter).
I do do a 30 sec interval session with 30 sec recovery x10 x 2 with similar recovery between sets - usually 400m jog. But it's not a flat out sprint.
Sprint - you were running Beachy yes? How did it go? Are you going to do Goldbeetles marathon?
I've looked at http://www.runningplanet.com/training/10K-interval-training-workouts.html (then ran in the opposite direction hoping no one saw me).
I don't know of any good books or websites. I get training sessions mailed to me from 2 different coaches.
6x1k 200m jog recovery (@ 5 + 3k pace)
10x400m 1 min recovery + 5x200m 200m jr
I like 3x3k @ 10k pace 200m float recovery, that's a nice steady set. 
Hill reps 3 x 60; 3 x 45; 3 x 30; 3 x15 - jog back to the bottom of the hill backwards for recovery. If you can walk afterward then you didn't try hard enough.
I usually like to do shorter faster sets when I'm not feeling that fit and longer sets when I'm getting close to a target race and am feeling fit.