SPAIS, G. S. An Activity System As A Behavioristic Framework For The Elaboration Of Promotion Techniques. Journal of Applied Business Research (JABR), [S. l.], v. 27, n. 3, p. 9–32, 2011. DOI: 10.19030/jabr.v27i3.4210. Disponível em: https://clutejournals.com/index.php/JABR/article/view/4210. Acesso em: 17 jul. 2024.