Salessi, Solana, and Alicia Omar. 2019. “Validez Discriminante, Predictiva E Incremental De La Escala De Comportamientos Laborales Proactivos De Belschak Y Den Hartog/Discriminant, Predictive and Incremental Validity of Belschak & Den Hartog´s Proactive Work Behaviors Scale”. Costa Rican Journal of Psychology 38 (1):75-93. https://doi.org/10.22544/rcps.v38i01.05.