APA (7th ed.) Citation

Barker, F., & Hyde, R. (1982). London as it might have been. John Murray.

Chicago Style (17th ed.) Citation

Barker, Felix, and Ralph Hyde. London as It Might Have Been. London: John Murray, 1982.

MLA (9th ed.) Citation

Barker, Felix, and Ralph Hyde. London as It Might Have Been. John Murray, 1982.