APA (7th ed.) Citation

Putra, H., & Chang, J. S. (2011). A personal music player with smart features.

Chicago Style (17th ed.) Citation

Putra, Hendra, and Joseph Sylvester Chang. A Personal Music Player with Smart Features. 2011.

MLA (9th ed.) Citation

Putra, Hendra, and Joseph Sylvester Chang. A Personal Music Player with Smart Features. 2011.

Warning: These citations may not always be 100% accurate.