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.
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