APA (7th ed.) Citation

Barton, A. W. (1939). A text book on light. Longmans, Green and Co.

Chicago Style (17th ed.) Citation

Barton, A. W. A Text Book on Light. London, New York [etc.]: Longmans, Green and Co, 1939.

MLA (8th ed.) Citation

Barton, A. W. A Text Book on Light. Longmans, Green and Co, 1939.