APA
Ocannor J.D, . (1991). Phonetics. : London penguins books.
Chicago
Ocannor J.D, . 1991. Phonetics. : London penguins books.
Harvard
Ocannor J.D, . (1991). Phonetics. : London penguins books.
MLA
Ocannor J.D, . Phonetics. : London penguins books. 1991.