Cita APA (7th ed.)
Butcher, H., Pidgeón, D., & Pont, H. (1970). Educational research in Britain: 2.
Cita Chicago (17th ed.)
Butcher, H.J, Douglas Pidgeón, i H.B Pont. Educational Research in Britain: 2. 1970.
Cita MLA (9th ed.)
Butcher, H.J, et al. Educational Research in Britain: 2. 1970.
Atenció: Aquestes cites poden no estar 100% correctes.