APA ציטוט

Walter, S. D., Han, H., Guyatt, G. H., Bassler, D., Bhatnagar, N., Gloy, V., . . . Briel, M. (2020). A systematic survey of randomised trials that stopped early for reasons of futility. BMC Med Res Methodol.

Citação norma Chicago

Walter, S. D., H. Han, G. H. Guyatt, D. Bassler, N. Bhatnagar, V. Gloy, S. Schandelmaier, and M. Briel. "A Systematic Survey of Randomised Trials That Stopped Early for Reasons of Futility." BMC Med Res Methodol 2020.

ציטוט MLA

Walter, S. D., et al. "A Systematic Survey of Randomised Trials That Stopped Early for Reasons of Futility." BMC Med Res Methodol 2020.