APA (7th ed.) Citation

Graves, C. (1940). The thin blue line. Hutchinson.

Chicago Style (17th ed.) Citation

Graves, Charles. The Thin Blue Line. London: Hutchinson, 1940.

MLA (8th ed.) Citation

Graves, Charles. The Thin Blue Line. Hutchinson, 1940.

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