Hilton, Peter John & Holton, Derek Allan & Pedersen, Jean: Mathematical vistas: from a room with many windows, s. 27. Springer, 2002. ISBN 9780387950648Google Books. (englanniksi)
Mahoney, Michael Sean: The mathematical career of Pierre de Fermat, 1601–1665, 2. edition, s. 15. Princeton University Press, 1994. ISBN 9780691036663Google Books. (englanniksi)
Heyde, C. C. & Seneta, Eugene: Statisticians of the centuries, s. 11. Springer, 2001. ISBN 9780387953298Google Books. (englanniksi)
