E The check number appears last in an ISBN. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b3\/Understand-an-ISBN-Code-Step-1-Version-3.jpg\/v4-460px-Understand-an-ISBN-Code-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/b\/b3\/Understand-an-ISBN-Code-Step-1-Version-3.jpg\/aid40259-v4-728px-Understand-an-ISBN-Code-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"
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