(2018). Trial size - Field Trials of Health Interventions - NCBI Bookshelf.pdf. Oxford University Press.
Chicago Style (17th ed.) CitationTrial Size - Field Trials of Health Interventions - NCBI Bookshelf.pdf. Oxford University Press, 2018.
MLA (8th ed.) CitationTrial Size - Field Trials of Health Interventions - NCBI Bookshelf.pdf. Oxford University Press, 2018.
Warning: These citations may not always be 100% accurate.