APA (7th ed.) Citation

Lee, M., Whitehead, J., & Ntoumanis, N. (2013). How important are ethical attitudes? Routledge.

Chicago Style (17th ed.) Citation

Lee, M., J. Whitehead, and Nikos Ntoumanis. How Important Are Ethical Attitudes? Routledge, 2013.

MLA (9th ed.) Citation

Lee, M., et al. How Important Are Ethical Attitudes? Routledge, 2013.