Thrower, E., and B. Eller. “The Effect of an Infant Exercise Class With Parental Guidance on Tantrum Levels”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 36, no. 1, Sept. 2017, pp. 79-86, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8067.