Dyfyniad APA

Ireson, J., & Hallam, S. (2003). Ability grouping in education. Paul Chapman ; Sage.

Dyfyniad Arddull Chicago

Ireson, Judith, and Susan Hallam. Ability Grouping in Education. London: Paul Chapman ; Sage, 2003.

Dyfyniad MLA

Ireson, Judith, and Susan Hallam. Ability Grouping in Education. Paul Chapman ; Sage, 2003.

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