Παραπομπή σε μορφή APA (7η εκδ.)

Cook, J., Julious, S., Sones, W., Hampson, L., Hewitt, C., Berlin, J., . . . Vale, L. (2018). DELTA2 guidance on choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial. BioMed Central.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cook, J., et al. DELTA2 Guidance on Choosing the Target Difference and Undertaking and Reporting the Sample Size Calculation for a Randomised Controlled Trial. BioMed Central, 2018.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cook, J., et al. DELTA2 Guidance on Choosing the Target Difference and Undertaking and Reporting the Sample Size Calculation for a Randomised Controlled Trial. BioMed Central, 2018.