Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.