The image probably shows all the information you need. You would use the spelling of the name as it is shown on the certificate. The certificate number, location and date of death would also be important information. Death Certificates are issued at the state level but the rules vary from state to state. Sometimes you order from the state and in some states it is the county. I would locate the Vital Records site for the state, or county of the certificate and add the link to the source citation. It wouldn't really matter where the copy came from. The source is the original document in the state repository. If you meet their requirements, you can buy a certified copy.