APA (7th ed.) Citation

Wallace, E. (1955). When the gangs came to London. Long.

Chicago Style (17th ed.) Citation

Wallace, Edgar. When the Gangs Came to London. London: Long, 1955.

MLA (8th ed.) Citation

Wallace, Edgar. When the Gangs Came to London. Long, 1955.

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