Cita APA (7a ed.)

Tillitt, B., & Bruder, M. N. (1985). Speaking naturally: Communication skills in American English. Cambridge University Press.

Cita Chicago Style (17a ed.)

Tillitt, Bruce, y Mary Newton Bruder. Speaking Naturally: Communication Skills in American English. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1985.

Cita MLA (8a ed.)

Tillitt, Bruce, y Mary Newton Bruder. Speaking Naturally: Communication Skills in American English. Cambridge University Press, 1985.