Huff, D. (1965). How to take a chance: The laws of probability. Penguin.
Chicago-viite (17. p.)Huff, Darrell. How to Take a Chance: The Laws of Probability. Harmondsworth: Penguin, 1965.
MLA-viite (8. p.)Huff, Darrell. How to Take a Chance: The Laws of Probability. Penguin, 1965.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.