The covers and spine of the book are green, and the front cover has the book's name on it. The book's back cover has multiple lines of unreadable text and a square (implying the presence of a picture).
Role in comicstrip
While SpongeBob and Patrick are making wishes outside, Squidward (who is inside his house) is reading Of Mice and Fish. While reading, he hears SpongeBob and Patrick wishing and gets annoyed. He eventually has enough of hearing the two make wishes and proceeds to yell at them.