Cita APA (7a ed.)

Alexander, C. N., & Langer, E. J. (1990). Higher stages of human development: Perspectives on adult growth. Oxford University Press.

Cita Chicago Style (17a ed.)

Alexander, Charles Nathaniel, y Ellen J. Langer. Higher Stages of Human Development: Perspectives on Adult Growth. New York [etc.]: Oxford University Press, 1990.

Cita MLA (9a ed.)

Alexander, Charles Nathaniel, y Ellen J. Langer. Higher Stages of Human Development: Perspectives on Adult Growth. Oxford University Press, 1990.