APA (7th ed.) Citation

Ahn, C., Heo, M., & Zhang, S. (2015). Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research.

Chicago Style (17th ed.) Citation

Ahn, Chul, Moonseoung Heo, and Song Zhang. Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research. 2015.

MLA (9th ed.) Citation

Ahn, Chul, et al. Sample Size Calculations for Clustered and Longitudinal Outcomes in Clinical Research. 2015.