Cita APA

Ruff, H. A., & Rothbart, M. K. (1996). Attention in early development: Themes and variations. New York: Oxford University Press.

Citación estilo Chicago

Ruff, Holly Alliger., y Mary Klevjord Rothbart. Attention in Early Development: Themes and Variations. New York: Oxford University Press, 1996.

Cita MLA

Ruff, Holly Alliger., y Mary Klevjord Rothbart. Attention in Early Development: Themes and Variations. New York: Oxford University Press, 1996.