Cita APA (7a ed.)

Feldman, S. S., & Elliott, G. R. (1990). At the threshold: The developing adolescent. Harvard University Press.

Cita Chicago Style (17a ed.)

Feldman, S. Shirley, y Glen R. Elliott. At the Threshold: The Developing Adolescent. Cambridge, Mass. ; London: Harvard University Press, 1990.

Cita MLA (9a ed.)

Feldman, S. Shirley, y Glen R. Elliott. At the Threshold: The Developing Adolescent. Harvard University Press, 1990.