Cita APA

Todd, S., Whitehead, A., Stallard, N., & Whitehead, J. (2001). Interim analyses and sequential designs in phase III studies. Blackwell Science Inc.

Citación estilo Chicago

Todd, Susan, Anne Whitehead, Nigel Stallard, y John Whitehead. Interim Analyses and Sequential Designs in Phase III Studies. Blackwell Science Inc, 2001.

Cita MLA

Todd, Susan, Anne Whitehead, Nigel Stallard, y John Whitehead. Interim Analyses and Sequential Designs in Phase III Studies. Blackwell Science Inc, 2001.