1. American Psychological Association. 2019. Publication Manual of the American Psychological Association: The Oficial Guide to APA Style (seventh ed ed.). https: //apastyle.apa.org/products/publication-manual-7th-edition American Psychological Association. 2019. Publication Manual of the American Psychological Association: The Oficial Guide to APA Style (seventh ed ed.). https: //apastyle.apa.org/products/publication-manual-7th-edition
2. Bristol University. [n. d.]. The CyBOK Project. ([n. d.]). https://www.cybok.org/ Bristol University. [n. d.]. The CyBOK Project. ([n. d.]). https://www.cybok.org/