Roach, P. (2009). English Phonetics and Phonology: A practical course (cuarta edición.). Cambridge University.
Citazione stile Chigago Style (17a edizione)Roach, Peter. English Phonetics and Phonology: A Practical Course. cuarta edición. Cambridge, Inglaterra: Cambridge University, 2009.
Citatione MLA (9a ed.)Roach, Peter. English Phonetics and Phonology: A Practical Course. cuarta edición. Cambridge University, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.