APA (7th ed.) Citation

D, D., CM, B., & M, C. (2004). How many do I need? basic principles of sample size estimation. Journal of Advanced Nursing (Wiley-Blackwell), 47(3), 297. https://doi.org/10.1111/j.1365-2648.2004.03093.x

Chicago Style (17th ed.) Citation

D, Devane, Begley CM, and Clark M. "How Many Do I Need? Basic Principles of Sample Size Estimation." Journal of Advanced Nursing (Wiley-Blackwell) 47, no. 3 (2004): 297. https://doi.org/10.1111/j.1365-2648.2004.03093.x.

MLA (9th ed.) Citation

D, Devane, et al. "How Many Do I Need? Basic Principles of Sample Size Estimation." Journal of Advanced Nursing (Wiley-Blackwell), vol. 47, no. 3, 2004, p. 297, https://doi.org/10.1111/j.1365-2648.2004.03093.x.