Cita APA (7th ed.)

Ladefoged, P. (1967). Three areas of experimental phonetics: Stress and respiratory activity, the nature of vowel quality, units in the perception and production of speech. Oxford University Press.

Cita Chicago (17th ed.)

Ladefoged, Peter. Three Areas of Experimental Phonetics: Stress and Respiratory Activity, the Nature of Vowel Quality, Units in the Perception and Production of Speech. London: Oxford University Press, 1967.

Cita MLA (9th ed.)

Ladefoged, Peter. Three Areas of Experimental Phonetics: Stress and Respiratory Activity, the Nature of Vowel Quality, Units in the Perception and Production of Speech. Oxford University Press, 1967.