APA Style

Harbord, M, J., Khan, S, R. (2025). 21 Visual thinking tools for the classroom: developing real-world problem solvers in grades 5-10 . New York: Routledge.

MLA Style

Harbord, Meredith, J.,., Khan, Sara, Riaz. "21 Visual thinking tools for the classroom: developing real-world problem solvers in grades 5-10". New York: Routledge, 2025. Text.