APA (7th ed.) Zitazioa
SpringerLink (Online service), Moher, D., Shekelle, P. G., & Stewart, L. A. Systematic Reviews. BioMed Central : Imprint: BioMed Central.
Chicago Style (17th ed.) Zitazioa
SpringerLink (Online service), David Moher, Paul G. Shekelle, eta Lesley A. Stewart. Systematic Reviews. London: BioMed Central : Imprint: BioMed Central.
MLA (9th ed.) Zitazioa
SpringerLink (Online service), et al. Systematic Reviews. BioMed Central : Imprint: BioMed Central.
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