Cita APA (7a ed.)

Kingdon, R. (1958). English intonation practice. Longman.

Cita Chicago Style (17a ed.)

Kingdon, Roger. English Intonation Practice. London: Longman, 1958.

Cita MLA (9a ed.)

Kingdon, Roger. English Intonation Practice. Longman, 1958.