APA (7th ed.) Citation

O'Connor, D. J., & Powell, B. (1980). Elementary logic / D.J. O'Connor and Betty Powell. Teach Yourself.

Chicago Style (17th ed.) Citation

O'Connor, D. J., and Betty Powell. Elementary Logic / D.J. O'Connor and Betty Powell. Sevenoaks: Teach Yourself, 1980.

MLA (9th ed.) Citation

O'Connor, D. J., and Betty Powell. Elementary Logic / D.J. O'Connor and Betty Powell. Teach Yourself, 1980.

Warning: These citations may not always be 100% accurate.