This book is hilarious.
The literature used is fairly diverse (Gilgamesh all the way to The Hunger Games). Some entries parody the actual book, others the author/poet, and others the characters of the book.
I think the test of a parody is if it's still funny even if you don't know the original source. There are plenty of books included that I have not read, but the texts were still very humorous. For the most part, as long as you have a basic understanding of the author or story, you can get most of the jokes.