Não informado. (1983). Training and Education. Library Association, Training and Education Group.
Citação do estilo Chicago (17ª ed.)Não informado. Training and Education. London: Library Association, Training and Education Group, 1983.
Citação MLA (8ª ed.)Não informado. Training and Education. Library Association, Training and Education Group, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.