1. ACM. Computer Science Curriculum 2013; https://www.acm.org/education/CS2013-final-report.pdf ACM. Computer Science Curriculum 2013; https://www.acm.org/education/CS2013-final-report.pdf
2. Aho A. Computation and Computational Thinking 2011; http://ubiquity.acm.org/article.cfm?id=1922682 Aho A. Computation and Computational Thinking 2011; http://ubiquity.acm.org/article.cfm?id=1922682
3. Computing at School a subdivision of the British Computer Society (BCS). 2015. Computational Thinking: A Guide for Teachers; http://community.computingatschool.org.uk/files/6695/original.pdf Computing at School a subdivision of the British Computer Society (BCS). 2015. Computational Thinking: A Guide for Teachers; http://community.computingatschool.org.uk/files/6695/original.pdf
4. CSTA. Operational Definition of Computational Thinking. 2011; http://www.csta.acm.org/Curriculum/sub/CurrFiles/CompThinkingFlyer.pdf CSTA. Operational Definition of Computational Thinking. 2011; http://www.csta.acm.org/Curriculum/sub/CurrFiles/CompThinkingFlyer.pdf