APA (7th ed.) Citation

Webber, A. L., Black, D., Garnett, D., & Hart, C. (1990). Aspects of love (Rev. ed.). The Really Useful Group.

Chicago Style (17th ed.) Citation

Webber, Andrew Lloyd, Don Black, David Garnett, and Charles Hart. Aspects of Love. Rev. ed. London: The Really Useful Group, 1990.

MLA (9th ed.) Citation

Webber, Andrew Lloyd, et al. Aspects of Love. Rev. ed. The Really Useful Group, 1990.