Cita APA (7a ed.)

Petticrew, M., & Roberts, H. (2006). Systematic reviews in the social sciences: A practical guide. Blackwell Pub.

Cita Chicago Style (17a ed.)

Petticrew, Mark, y Helen Roberts. Systematic Reviews in the Social Sciences: A Practical Guide. Malden, MA ; Oxford: Blackwell Pub, 2006.

Cita MLA (9a ed.)

Petticrew, Mark, y Helen Roberts. Systematic Reviews in the Social Sciences: A Practical Guide. Blackwell Pub, 2006.