Não informado. (2007). Learning resources. Association for Educational Communications and Technology.
Citação do estilo Chicago (17ª ed.)Não informado. Learning Resources. Washington: Association for Educational Communications and Technology, 2007.
Citação MLA (8ª ed.)Não informado. Learning Resources. Association for Educational Communications and Technology, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.