APA-čujuhus (7. p.)
SpringerLink (Online service), Lancaster, G., & Thabane, L. Pilot and Feasibility Studies. BioMed Central : Imprint: BioMed Central.
Chicago-čujuhus (17. p.)
SpringerLink (Online service), Gillian Lancaster, juo Lehana Thabane. Pilot and Feasibility Studies. London: BioMed Central : Imprint: BioMed Central.
MLA-čujuhus (9. p.)
SpringerLink (Online service), et al. Pilot and Feasibility Studies. BioMed Central : Imprint: BioMed Central.
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