The ISBN of Think of a Number is 978-0-307-58892-0.
I think International Standard Book Number
The ISBN of I'm Not Who You Think I Am is 0525461531.
The ISBN of The Number Devil is 0805062998.
The ISBN of Number of the Beast - comics - is 1401219993.
The ISBN of Number Ten - novel - is 9780140279412.
The ISBN of The Precipice is 9780312848767.
The ISBN of I Am Number Four is 0-061-96955-9.
One can look up books using an ISBN number using a website called Lookup by ISBN. One could also look up books by the ISBN number on Amazon or ISBN-check.
ISBN stands for International Standard Book Number. Video games are not eligible for an ISBN number.
The ISBN of Tomorrow in the Battle Think on Me is 0-8112-1482-6.
You should use the ISBN number provided by the publisher of the book.
The ISBN of Grandpa Gazillion's Number Yard is 0-8050-6282-3.