2-s2.0-77953899295. (2010). Usability testing for educational computer game using observation method. Proceedings - 2010 International Conference on Information Retrieval and Knowledge Management: Exploring the Invisible World, CAMP'10. https://doi.org/10.1109/INFRKM.2010.5466926
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)2-s2.0-77953899295. "Usability Testing for Educational Computer Game Using Observation Method." Proceedings - 2010 International Conference on Information Retrieval and Knowledge Management: Exploring the Invisible World, CAMP'10 2010. https://doi.org/10.1109/INFRKM.2010.5466926.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)2-s2.0-77953899295. "Usability Testing for Educational Computer Game Using Observation Method." Proceedings - 2010 International Conference on Information Retrieval and Knowledge Management: Exploring the Invisible World, CAMP'10, 2010, https://doi.org/10.1109/INFRKM.2010.5466926.