APA (7th ed.) Citation

Say, M. G., & Say, M. G. (1954). Cathode-ray tubes. Newnes.

Chicago Style (17th ed.) Citation

Say, M. G., and M. G. Say. Cathode-ray Tubes. London: Newnes, 1954.

MLA (8th ed.) Citation

Say, M. G., and M. G. Say. Cathode-ray Tubes. Newnes, 1954.