Feltz, D. L., & Riessinger, C. A. (1990). Effects of in vivo emotive imagery and performance feedback on self-efficacy and muscular endurance. Journal of sport and exercise psychology, 12(2), S. 132-143. doi:10.1123/jsep.12.2.132

Feltz, Deborah L., and Camala A. Riessinger. "Effects of in Vivo Emotive Imagery and Performance Feedback On Self-efficacy and Muscular Endurance." Journal of Sport and Exercise Psychology 12, no. 2 (1990): S. 132-143.

Feltz, Deborah L., and Camala A. Riessinger. "Effects of in Vivo Emotive Imagery and Performance Feedback On Self-efficacy and Muscular Endurance." Journal of Sport and Exercise Psychology 12.2 (1990): S. 132-143.