Vergine, Gicele, e Raquel D’ely. 2009. “EFL Speaking and Individual Differences in Working Memory Capacity: Grammatical Complexity and Weighted Lexical Density in the Oral Production of Beginners”. Signótica 20 (2). Goiânia:335-66. https://doi.org/10.5216/sig.v20i2.6084.