APA (7th ed.) Citation
Howie, S. J. (2013). Levels of thought in geometry of pre-service mathematics educators according to the van Hiele model. University of Pretoria.
Chicago Style (17th ed.) Citation
Howie, Sarah J. Levels of Thought in Geometry of Pre-service Mathematics Educators According to the Van Hiele Model. University of Pretoria, 2013.
MLA (9th ed.) Citation
Howie, Sarah J. Levels of Thought in Geometry of Pre-service Mathematics Educators According to the Van Hiele Model. University of Pretoria, 2013.
Warning: These citations may not always be 100% accurate.