Παραπομπή σε μορφή APA (7η εκδ.)

Gordon, H. (2021). Notes from deep time: A journey through our past and future worlds. Profile Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gordon, Helen. Notes from Deep Time: A Journey Through Our Past and Future Worlds. London: Profile Books, 2021.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gordon, Helen. Notes from Deep Time: A Journey Through Our Past and Future Worlds. Profile Books, 2021.