APA-Zitierstil (7. Ausg.)

Klaus, P., Rohman, J., & Hamaker, M. (2007). The hard truth about soft skills: Workplace lessons smart people wish they'd learned sooner (First edition.). Collins.

Chicago-Zitierstil (17. Ausg.)

Klaus, Peggy, Jane Rohman, und Molly Hamaker. The Hard Truth About Soft Skills: Workplace Lessons Smart People Wish They'd Learned Sooner. First edition. New York, NY: Collins, 2007.

MLA-Zitierstil (9. Ausg.)

Klaus, Peggy, et al. The Hard Truth About Soft Skills: Workplace Lessons Smart People Wish They'd Learned Sooner. First edition. Collins, 2007.