APA (7th ed.) Citation

Douglas, L. C. (1939). Green light (1st Cheap ed.). Peter Davies.

Chicago Style (17th ed.) Citation

Douglas, Lloyd C. Green Light. 1st Cheap ed. London: Peter Davies, 1939.

MLA (8th ed.) Citation

Douglas, Lloyd C. Green Light. 1st Cheap ed. Peter Davies, 1939.

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