BORISOVA, Lalka; ILIEV, Tsvetan; RASHKOVA, Gergana. EFFECTIVENESS IN THE USE OF COMMUNICATION CHANNELS. KNOWLEDGE - International Journal , [S. l.], v. 76, n. 1, p. 57–63, 2026. Disponível em: http://ojs.ikm.mk/index.php/kij/article/view/8284. Acesso em: 5 sep. 2026.