Gordon, H. (2021). Notes from deep time: A journey through our past and future worlds. Profile Books.
Lua i Stíl Chicago (17ú heag.)Gordon, Helen. Notes from Deep Time: A Journey Through Our Past and Future Worlds. London: Profile Books, 2021.
Lua MLA (9ú heag.)Gordon, Helen. Notes from Deep Time: A Journey Through Our Past and Future Worlds. Profile Books, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.