Cita APA (7a ed.)

Kingdon, R. (1966). The groundwork of English intonation. Longman.

Cita Chicago Style (17a ed.)

Kingdon, Roger. The Groundwork of English Intonation. London: Longman, 1966.

Cita MLA (8a ed.)

Kingdon, Roger. The Groundwork of English Intonation. Longman, 1966.