APA引文

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

Trích dẫn kiểu Chicago

Gravelle, J., và C. Rogers. Researching the Police in the 21st Century. Palgrave Macmillan UK, 2020.

MLA引文

Gravelle, J., và C. Rogers. Researching the Police in the 21st Century. Palgrave Macmillan UK, 2020.

警告：這些引文格式不一定是100％准確.