APA (7th ed.) Citation
PERRY, W. M. (1925). A Study in the psychology of learning in geometry.
Chicago Style (17th ed.) Citation
PERRY, Winona M. A Study in the Psychology of Learning in Geometry. New York, 1925.
MLA (9th ed.) Citation
PERRY, Winona M. A Study in the Psychology of Learning in Geometry. 1925.
Warning: These citations may not always be 100% accurate.