APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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