APA استشهاد

Gadd, D. (2012). Sage handbook of criminological research methods. sage.

استشهاد بنمط شيكاغو

Gadd, David. Sage Handbook of Criminological Research Methods. Losangeles: sage, 2012.

MLA استشهاد

Gadd, David. Sage Handbook of Criminological Research Methods. sage, 2012.