APA (7th ed.) Citation

Behrendt, G., & Tuccillo, L. (2004). He's just not that into you: : the no-excuses truth to understanding guys. Harper 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: Harper Element, 2004.

MLA (8th ed.) Citation

Behrendt, Greg, and Liz Tuccillo. He's Just Not That into You: : The No-excuses Truth to Understanding Guys. Harper Element, 2004.