Cita APA (7a ed.)

Palmer, H. E., Blandford, F., & Kingdon, R. (1969). A Grammar of Spoken English (3rd ed.). W. Heffer & Sons.

Cita Chicago Style (17a ed.)

Palmer, Harold E., F.G Blandford, y Roger Kingdon. A Grammar of Spoken English. 3rd ed. Cambridge: W. Heffer & Sons, 1969.

Cita MLA (9a ed.)

Palmer, Harold E., et al. A Grammar of Spoken English. 3rd ed. W. Heffer & Sons, 1969.