APA
O'Connor J. D., . (1954). A course of English pronunciation. The English book store, New Delhi: .
Chicago
O'Connor J D, . 1954. A course of English pronunciation. The English book store, New Delhi: .
Harvard
O'Connor J. D., . (1954). A course of English pronunciation. The English book store, New Delhi: .
MLA
O'Connor J D, . A course of English pronunciation. The English book store, New Delhi: . 1954.