(2014). Teknik Sampling Snowball dalam Penelitian Lapangan. ComTech Com- puter, Mathematics, and Engineering Applications, 5(2), 1110. https://doi.org/10.21512/com tech.v5i2.2427 23. Neuman, W. L. (2012). Basics of social research: Qualitative and quantitative approaches (no. July). 24. ...