Cita APA (7th ed.)

Spilker, B., & Schoenfelder, J. (1991). Data collection forms in clinical trials. Raven Press.

Cita Chicago (17th ed.)

Spilker, Bert, i John Schoenfelder. Data Collection Forms in Clinical Trials. New York: Raven Press, 1991.

Cita MLA (9th ed.)

Spilker, Bert, i John Schoenfelder. Data Collection Forms in Clinical Trials. Raven Press, 1991.