APA ציטוט

Ashby, D., & Machin, D. (1993). Stopping rules, interim analyses and data monitoring committees. Nature Publishing Group.

Citação norma Chicago

Ashby, D., and D. Machin. Stopping Rules, Interim Analyses and Data Monitoring Committees. Nature Publishing Group, 1993.

ציטוט MLA

Ashby, D., and D. Machin. Stopping Rules, Interim Analyses and Data Monitoring Committees. Nature Publishing Group, 1993.