Παραπομπή σε μορφή APA (7η εκδ.)

Cook, J., Cook, J., Bongard, E., Heneghan, C., & Butler, C. (2023). Conditional versus non-conditional incentives to maximise return of participant completed questionnaires in clinical trials: A cluster randomised study within a trial. BioMed Central.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cook, J., JA Cook, E. Bongard, C. Heneghan, και CC Butler. Conditional Versus Non-conditional Incentives to Maximise Return of Participant Completed Questionnaires in Clinical Trials: A Cluster Randomised Study Within a Trial. BioMed Central, 2023.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cook, J., et al. Conditional Versus Non-conditional Incentives to Maximise Return of Participant Completed Questionnaires in Clinical Trials: A Cluster Randomised Study Within a Trial. BioMed Central, 2023.