Ricky Ricotta's Mighty Robot vs. The Mecha-monkeys From Mars (Book 4)
(Ricky Ricotta #4)
by Dav Pilkey

• Publication Date: June 24, 2014
• Genres: Science Fiction
• Paperback: 144 pages
• Publisher: Scholastic Inc.
• ISBN-10: 0545630126
• ISBN-13: 9780545630122