Não informado. (1973). International Journal of Mechanical Engineering Education. Institution of Mechanical Engineers.
Citação do estilo Chicago (17ª ed.)Não informado. International Journal of Mechanical Engineering Education. London: Institution of Mechanical Engineers, 1973.
Citação MLA (8ª ed.)Não informado. International Journal of Mechanical Engineering Education. Institution of Mechanical Engineers, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.