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.
Spring is the season when cold winter temperatures gradually rise to the warmth of summer. Spring begins on the vernal equinox, when the hours of daylight are equal to the hours of darkness. In the Northern Hemisphere this occurs on March 20 or 21. In the Southern Hemisphere it happens September 22 or 23.