APA (7th ed.) Citation

Leonard, V. A. (1938). Police communication systems. University of California Press.

Chicago Style (17th ed.) Citation

Leonard, V. A. Police Communication Systems. Berkeley, Calif.: University of California Press, 1938.

MLA (9th ed.) Citation

Leonard, V. A. Police Communication Systems. University of California Press, 1938.

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