Sujianto, P. P. P., and S. Supriyono. “ANALISIS STRATEGI PEMASARAN 7P DI KOLAM RENANG TIRTO ARGO SIWARAK KABUPATEN SEMARANG”. Journal of Sport Science and Fitness, Vol. 6, no. 1, May 2020, pp. 65-71, doi:10.15294/jssf.v6i1.40213.