APA (7th ed.) Citation

Robertson, C. (1942). Zero hour: A Peter Gayleigh story. Ward, Lock.

Chicago Style (17th ed.) Citation

Robertson, Colin. Zero Hour: A Peter Gayleigh Story. London: Ward, Lock, 1942.

MLA (8th ed.) Citation

Robertson, Colin. Zero Hour: A Peter Gayleigh Story. Ward, Lock, 1942.

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