2016-01-142016-03-302016-01-142016-03-301973-12-01Purkey, W. W., Cage, B. N., & Graves, W. (1973). The Florida Key: a Scale to Infer Learner Self-Concept. Educational and Psychological Measurement, 33(4), 979-984. doi: 10.1177/001316447303300436http://hdl.handle.net/11244/25585en-USResearch Article10.1177/001316447303300436false