Hardcover Book format: Hardcover. Properties { "id": "https://schema.org/Hardcover", "label": "Hardcover", "comment": "Book format: Hardcover.", "subTypeOf": "https://schema.org/BookFormatType", "enumerationtype": "https://schema.org/BookFormatType", "equivalentClass": "", "properties": "", "subTypes": "", "supersedes": "", "supersededBy": "", "isPartOf": "" }Getting Started