Task: Question Understanding
Input (English): Context : The Teenage Mutant Ninja Turtles Guide to the Universe was written by Erick Wujcik, with art by Kevin Eastman and Peter Laird, and was published by Palladium Books in 1987 as a 48-page book. 
Question : What series is Teenage Mutant Ninja Turtles Guide to the Universe a part of?
Output (English): series