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 The Precipice is 9780312848767.
The ISBN of Number of the Beast - comics - is 1401219993.
The ISBN of Number Ten - novel - is 9780140279412.
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.
The ISBN of Tomorrow in the Battle Think on Me is 0-8112-1482-6.
ISBN stands for International Standard Book Number. Video games are not eligible for an ISBN number.
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.