APA (7th ed.) Citation

Callahan, S. C., & Egan, E. (1989). Psychology and the works of mercy.

Chicago Style (17th ed.) Citation

Callahan, Sidney Cornelia, and Eileen Egan. Psychology and the Works of Mercy. 1989.

MLA (8th ed.) Citation

Callahan, Sidney Cornelia, and Eileen Egan. Psychology and the Works of Mercy. 1989.

Warning: These citations may not always be 100% accurate.