APA (7th ed.) Citation

Klingaman, W. K. (1994). Turning 50: Quotes, lists and helpful hints. Penguin Books.

Chicago Style (17th ed.) Citation

Klingaman, William K. Turning 50: Quotes, Lists and Helpful Hints. New York: Penguin Books, 1994.

MLA (8th ed.) Citation

Klingaman, William K. Turning 50: Quotes, Lists and Helpful Hints. Penguin Books, 1994.