APA (7th ed.) Citation

Lean, G. A., & Clements, M. A. (1980). Spatial ability, visual imagery, and mathematical performance. Mathematics Education Centre, P.N.G. University of Technology.

Chicago Style (17th ed.) Citation

Lean, G. A., and M. A. Clements. Spatial Ability, Visual Imagery, and Mathematical Performance. [Lae]: Mathematics Education Centre, P.N.G. University of Technology, 1980.

MLA (9th ed.) Citation

Lean, G. A., and M. A. Clements. Spatial Ability, Visual Imagery, and Mathematical Performance. Mathematics Education Centre, P.N.G. University of Technology, 1980.