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Karen T. D'Alonzo; Joanne S. Stevenson; Shala E. Davis. (2004). Outcomes of a program to enhance exercise self-efficacy and improve fitness in black and hispanic college-age women. , 27(5), 357–369. doi:10.1002/nur.20029 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research