Cita APA (7th ed.)

Allen, R., & Baumgartner-Cohen, B. (2002). Spelling. Oxford University Press.

Cita Chicago (17th ed.)

Allen, Robert, i Beatrice Baumgartner-Cohen. Spelling. Oxford: Oxford University Press, 2002.

Cita MLA (8th ed.)

Allen, Robert, i Beatrice Baumgartner-Cohen. Spelling. Oxford University Press, 2002.