Ward, I. C. (1948). The phonetics of English (4th ed., repr. with minor corrections.). Heffer.
Cita Chicago (17th ed.)Ward, Ida C. The Phonetics of English. 4th ed., repr. with minor corrections. Cambridge [Cambridgeshire]: Heffer, 1948.
Cita MLA (8th ed.)Ward, Ida C. The Phonetics of English. 4th ed., repr. with minor corrections. Heffer, 1948.
Atenció: Aquestes cites poden no estar 100% correctes.