Ripman, W. (1925). The sounds of spoken English (12th ed.). J. M. Dent.
Cita Chicago Style (17a ed.)Ripman, Walter. The Sounds of Spoken English. 12th ed. London: J. M. Dent, 1925.
Cita MLA (8a ed.)Ripman, Walter. The Sounds of Spoken English. 12th ed. J. M. Dent, 1925.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.