Cita APA (7a ed.)

Witzel, B. S., & Little, M. E. (2016). Teaching elementary mathematics to struggling learners. The Guilford Press.

Cita Chicago Style (17a ed.)

Witzel, Bradley S., y Mary E. Little. Teaching Elementary Mathematics to Struggling Learners. New York, London: The Guilford Press, 2016.

Cita MLA (9a ed.)

Witzel, Bradley S., y Mary E. Little. Teaching Elementary Mathematics to Struggling Learners. The Guilford Press, 2016.