APA (7th ed.) Citation

Behrendt, G., & Tuccillo, L. (2005). He's just not that into you: The no-excuses truth to understanding guys. Element.

Chicago Style (17th ed.) Citation

Behrendt, Greg, and Liz Tuccillo. He's Just Not That into You: The No-excuses Truth to Understanding Guys. London: Element, 2005.

MLA (9th ed.) Citation

Behrendt, Greg, and Liz Tuccillo. He's Just Not That into You: The No-excuses Truth to Understanding Guys. Element, 2005.