Shuajibi, Elmedina, and Miranda Rahmani. “PORTER’S MODEL OF 5 FORCES: PORTER’S MODEL OF THE COMPANY FORMA NOVA”. KNOWLEDGE - International Journal , vol. 31, no. 5, Feb. 2020, pp. 1331-7, https://ikm.mk/ojs/index.php/kij/article/view/5662.