Cita APA (7a ed.)

Palmer, H. E., & Redman, H. V. (1969). This language-learning business. Oxford U.P.

Cita Chicago Style (17a ed.)

Palmer, Harold E., y H. Vere Redman. This Language-learning Business. London: Oxford U.P, 1969.

Cita MLA (9a ed.)

Palmer, Harold E., y H. Vere Redman. This Language-learning Business. Oxford U.P, 1969.