Cita APA (7a ed.)

Trisomy 21 (Down Syndrome): Research Perspectives Conference, Cruz, F. F. d. l., & Gerald, P. S. (1981). Trisomy 21 (Down Syndrome): Research perspectives. University Park Press.

Cita Chicago Style (17a ed.)

Trisomy 21 (Down Syndrome): Research Perspectives Conference, Félix F. de la Cruz, y Park S. Gerald. Trisomy 21 (Down Syndrome): Research Perspectives. Baltimore: University Park Press, 1981.

Cita MLA (9a ed.)

Trisomy 21 (Down Syndrome): Research Perspectives Conference, et al. Trisomy 21 (Down Syndrome): Research Perspectives. University Park Press, 1981.