Cita APA (7th ed.)

Spatial Reasoning Study Group & Davis, B. (2015). Spatial reasoning in the early years: Principles, assertions, and speculations. Routledge.

Cita Chicago (17th ed.)

Spatial Reasoning Study Group i Brent Davis. Spatial Reasoning in the Early Years: Principles, Assertions, and Speculations. New York: Routledge, 2015.

Cita MLA (9th ed.)

Spatial Reasoning Study Group i Brent Davis. Spatial Reasoning in the Early Years: Principles, Assertions, and Speculations. Routledge, 2015.