APA-ийн эшлэл(7 дахь хэвлэлт)

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.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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.

MLA -ийн эшлэл (9 дэх хэвлэлт)

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.