Langford, David (2021). "Future Histories". In Clute, John; Langford, David (eds.). The Encyclopedia of Science Fiction (Fourth ed.). London and Reading: SFE Ltd/Ansible Editions. Retrieved 11 January 2021.
Clute, John (2021). "M Volney". In Clute, John; Langford, David (eds.). The Encyclopedia of Science Fiction (Fourth ed.). London and Reading: SFE Ltd/Ansible Editions. Retrieved 11 January 2021.
Clute, John (2021). "Jones, Neil R". In Clute, John; Langford, David (eds.). The Encyclopedia of Science Fiction (Fourth ed.). London and Reading: SFE Ltd/Ansible Editions. Retrieved 11 January 2021.
sfdictionary.com
"Future History". Historical Dictionary of Science Fiction. Retrieved 11 January 2024.