Dyfyniad APA

National Council for the Social Studies. Social education. Naitonal Council for the Social Studies.

Dyfyniad Arddull Chicago

National Council for the Social Studies. Social Education. Washington: Naitonal Council for the Social Studies.

Dyfyniad MLA

National Council for the Social Studies. Social Education. Naitonal Council for the Social Studies.

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