Παραπομπή σε μορφή APA (7η εκδ.)

Koopman, L., van der Heijden, G., Glasziou, P., Grobbee, D., & Rovers, M. (2007). A systematic review of analytical methods used to study subgroups in (individual patient data) meta-analyses.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Koopman, L., G. van der Heijden, P. Glasziou, D. Grobbee, και M. Rovers. A Systematic Review of Analytical Methods Used to Study Subgroups in (individual Patient Data) Meta-analyses. 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Koopman, L., et al. A Systematic Review of Analytical Methods Used to Study Subgroups in (individual Patient Data) Meta-analyses. 2007.