APA Citation

Madden, S. P., & Diaz, R. Spatial reasoning and Pólya's five planes problem.

Chicago Style Citation

Madden, Seán P., and Ricardo Diaz. Spatial Reasoning and Pólya's Five Planes Problem.

MLA Citation

Madden, Seán P., and Ricardo Diaz. Spatial Reasoning and Pólya's Five Planes Problem.

Warning: These citations may not always be 100% accurate.