Each exam item (a question with its possible answers) has at least two references to standard books or other sources of project management. Most of the questions reference the PMI A Guide to the Project Management Body of Knowledge (aka the PMBOK Guide).
The Rite of Spring (Le Sacre du Printemps) is a ballet in two parts. The entire ballet was a concept developed by Igor Stravinsky. He wrote the music. The set and costumes were designed by Nicholas Roerich.
Igor Stravinsky wrote The Rite of Spring in 1913. It redefined 20th-century music, much as Beethoven's Eroica had transformed music a century before. With it, Stravinsky took himself far into the realm of the unconscious.