APA (7th ed.) Citation

Low, O. (1970). Lower certificate English course for foreign students (2. ed.). Arnold.

Chicago Style (17th ed.) Citation

Low, Ona. Lower Certificate English Course for Foreign Students. 2. ed. London: Arnold, 1970.

MLA (9th ed.) Citation

Low, Ona. Lower Certificate English Course for Foreign Students. 2. ed. Arnold, 1970.