APA-referens (7:e uppl.)

Whitehead, J. (1997). The design and analysis of sequential clinical trials (2a. ed.). John Wiley.

Chicago-referens (17:e uppl.)

Whitehead, John. The Design and Analysis of Sequential Clinical Trials. 2a. ed. Nueva York: John Wiley, 1997.

MLA-referens (9:e uppl.)

Whitehead, John. The Design and Analysis of Sequential Clinical Trials. 2a. ed. John Wiley, 1997.