Putra, Y., 		Widnyana, M., & 		Saraswati, N.
(2022).
 Combination Intervention Mulligan’s  Sustained Natural Apophyseal Glides and Ultrasounds Better Than Combination Intervention Stretching And Ultrasounds For Increasing Functional Activity  Non-Specific Low Back Pain Patient.
<em>Sport And Fitness Journal, 10</em>(1), 45-51.
doi:10.24843/spj.2022.v10.i01.p07