Sturman, C. (1981). Police: An in-depth investigation of a police force in action. Purnell.
Chicago-Zitierstil (17. Ausg.)Sturman, Clive. Police: An In-depth Investigation of a Police Force in Action. Maidenhead: Purnell, 1981.
MLA-Zitierstil (8. Ausg.)Sturman, Clive. Police: An In-depth Investigation of a Police Force in Action. Purnell, 1981.
警告：这些引文格式不一定是100％准确.