Gordon, H. (2021). Notes from deep time: A journey through our past and future worlds. Profile Books.
芝加哥风格引文Gordon, Helen. Notes from Deep Time: A Journey Through Our Past and Future Worlds. London: Profile Books, 2021.
MLA引文Gordon, Helen. Notes from Deep Time: A Journey Through Our Past and Future Worlds. Profile Books, 2021.
警告：这些引文格式不一定是100％准确.