Silcock, P. (1999). New Progressivism. Falmer Press.
Cita Chicago (17th ed.)Silcock, Peter. New Progressivism. London: Falmer Press, 1999.
Cita MLA (9th ed.)Silcock, Peter. New Progressivism. Falmer Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.