APA aipamena

Glasziou, P., & Heneghan, C. (2009). A spotter's guide to study designs.

Chicago Style aipamena

Glasziou, P., and C. Heneghan. A Spotter's Guide to Study Designs. 2009.

MLA aipamena

Glasziou, P., and C. Heneghan. A Spotter's Guide to Study Designs. 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.