APA
O'Connor J. D.,, . (1980). Better English pronunciation. Cambridge [Cambridgeshire]: Cambridge University Press.
Chicago
O'Connor J D,, . 1980. Better English pronunciation. Cambridge [Cambridgeshire]: Cambridge University Press.
Harvard
O'Connor J. D.,, . (1980). Better English pronunciation. Cambridge [Cambridgeshire]: Cambridge University Press.
MLA
O'Connor J D,, . Better English pronunciation. Cambridge [Cambridgeshire]: Cambridge University Press. 1980.