Gravelle, J., & Rogers, C. (2020). Researching the Police in the 21st Century. Palgrave Macmillan UK.
शिकागो स्टाइल उद्धरणGravelle, J., और C. Rogers. Researching the Police in the 21st Century. Palgrave Macmillan UK, 2020.
एमएलए उद्धरणGravelle, J., और C. Rogers. Researching the Police in the 21st Century. Palgrave Macmillan UK, 2020.
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