APA (7th ed.) Citation

Palmer, D. (2006). Why it's hard to be good: An introduction to ethical theory. McGraw-Hill.

Chicago Style (17th ed.) Citation

Palmer, Donald. Why It's Hard to Be Good: An Introduction to Ethical Theory. Boston [u.a.]: McGraw-Hill, 2006.

MLA (9th ed.) Citation

Palmer, Donald. Why It's Hard to Be Good: An Introduction to Ethical Theory. McGraw-Hill, 2006.