Cita APA (7a ed.)

O'Connor, J. D. (1967). Better English pronunciation. At the University Press.

Cita Chicago Style (17a ed.)

O'Connor, J. D. Better English Pronunciation. Cambridge: At the University Press, 1967.

Cita MLA (9a ed.)

O'Connor, J. D. Better English Pronunciation. At the University Press, 1967.