By default, we provide 24by7 Publishing’s logo and name in most of the books powered by us. If the author is using the ISBN provided by 24by7 Publishing, using our logo will be mandatory. If the author chooses to use only his/her preferred logo, he/she needs to put his/her own unique and valid ISBN number and barcode for the book. The authors may also have simultaneously both logos with our ISBN number for the same book.