Cita APA (7a ed.)

Kingdon, R. (1959). The groundwork of english intonation. Longmans.

Cita Chicago Style (17a ed.)

Kingdon, Roger. The Groundwork of English Intonation. London: Longmans, 1959.

Cita MLA (8a ed.)

Kingdon, Roger. The Groundwork of English Intonation. Longmans, 1959.