APA (7th ed.) Zitazioa
SpringerLink (Online service), Grimshaw, J., & Altman, D. Trials. BioMed Central : Imprint: BioMed Central.
Chicago Style (17th ed.) Zitazioa
SpringerLink (Online service), Jeremy Grimshaw, eta Doug Altman. Trials. London: BioMed Central : Imprint: BioMed Central.
MLA (9th ed.) Zitazioa
SpringerLink (Online service), et al. Trials. BioMed Central : Imprint: BioMed Central.
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