Ulung Napitu, Corry, Wilson Simanjuntak, and Bakhrul Khair Amal. “Cultural Development in Analysis of the Evolutionary Paradigm, Diffusion and Structural Functional”. SIASAT, Vol. 7, no. 1, Jan. 2022, pp. 1-12, https://siasatjournal.id/index.php/siasat/article/view/107.