APA (7th ed.) Citation

Gunther, M. (1977). The luck factor: Why some people are luckier than others and how you can become one of them. Ballantine Books.

Chicago Style (17th ed.) Citation

Gunther, Max. The Luck Factor: Why Some People Are Luckier than Others and How You Can Become One of Them. New York: Ballantine Books, 1977.

MLA (9th ed.) Citation

Gunther, Max. The Luck Factor: Why Some People Are Luckier than Others and How You Can Become One of Them. Ballantine Books, 1977.