Dyfyniad APA

Shulman, L. (2012). The skills of helping individuals, families, groups, and communities. (International ed.).

Dyfyniad Arddull Chicago

Shulman, Lawrence. The Skills of Helping Individuals, Families, Groups, and Communities. International ed. 2012.

Dyfyniad MLA

Shulman, Lawrence. The Skills of Helping Individuals, Families, Groups, and Communities. International ed. 2012.

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