Litfin, Thorsten, Özlem Teckert, and Julia Lamberz. 2017. “The Choice of Color, Topic and Toys: An Empirical Study of Gender Roles”. ENTRENOVA - ENTerprise REsearch InNOVAtion 3 (1):241-48. https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/14083.