I've decided that my definite weak point in my artwork is my application of perspective. My school didn't give much emphasis on it, being that it is a predominantly figurative school.

I understand the basics, but I'm looking for some more in-depth perspective tutorials and such. Inserting figures into perspective, composition, interesting vantage points, etc....

So that being said, are there any good books (or any other sources) people know of that they can recommend to me?

Thanks all.