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Nigg, Claudio R.; Jordan, Patricia J.; Atkins, Angela (2012). Behavioral Measurement in Exercise Psychology. In: Tenenbaum, Gershon; Eklund, Robert C.; Kamata, Akihito (eds.) Measurement in Sport and Exercise Psychology (pp. 455-464). Human Kinetics 10.5040/9781492596332.ch-039
