Roberts, J. (2006). Spelling and recovery. D. Fulton.
Cita Chicago (17th ed.)Roberts, Jan. Spelling and Recovery. London: D. Fulton, 2006.
Cita MLA (9th ed.)Roberts, Jan. Spelling and Recovery. D. Fulton, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.