Cita APA (7th ed.)

Maley, A., & Duff, A. (1975). Sounds interesting: Resource material for teachers. Cambridge University Press.

Cita Chicago (17th ed.)

Maley, Alan, i Alan Duff. Sounds Interesting: Resource Material for Teachers. Cambridge, [England]: Cambridge University Press, 1975.

Cita MLA (9th ed.)

Maley, Alan, i Alan Duff. Sounds Interesting: Resource Material for Teachers. Cambridge University Press, 1975.