Pidgeon, D. A. (1967). Achievement in mathematics: A national study of secondary schools. Bucks : National Foundation for Educational Research in England and Wales.
Citação do estilo Chicago (17ª ed.)Pidgeon, Douglas A. Achievement in Mathematics: A National Study of Secondary Schools. Bucks : National Foundation for Educational Research in England and Wales, 1967.
Citação MLA (9ª ed.)Pidgeon, Douglas A. Achievement in Mathematics: A National Study of Secondary Schools. Bucks : National Foundation for Educational Research in England and Wales, 1967.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.