APA-ийн эшлэл(7 дахь хэвлэлт)

Richet, P. (2007). A natural history of time. University of Chicago Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Richet, Pascal. A Natural History of Time. Chicago: University of Chicago Press, 2007.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Richet, Pascal. A Natural History of Time. University of Chicago Press, 2007.