1. Chinese Buddy. (2014, October 29). Chinese for Kids | Song to Learn 'Greetings' in 3 Minutes! [Video]. YouTube. https://www.youtube.com/watch?v=0fm11XFw8uY
2. Chinese Buddy. (2018a, December 21). Chinese Pinyin Song 1 - Vowels (a, o, e, i u ü) [Video]. YouTube. https://www.youtube.com/watch?v=FNY_GWFCsYY
3. Chinese Buddy. (2018b, December 28). Chinese Pinyin Song 2 - Vowels (ai, ei, ui, ao, ou, iu) [Video]. YouTube. https://www.youtube.com/watch?v=BBHt-sVf5Ik
4. Integrating mobile technologies, social media and learning design
5. Darice Lee. (2013, November 12). 这是谁? Zhe Shi Shei MV Ft. Fruits [Video] YouTube. https://www.youtube.com/watch?v=WLdXWvgd-Ik