Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.