APA (7th ed.) Citation

Jang, D. Y., & Jang, J. S. (2008). Yes, you can speak Korean! Hollym.

Chicago Style (17th ed.) Citation

Jang, Daniel Y., and Jacob S. Jang. Yes, You Can Speak Korean! Seoul: Hollym, 2008.

MLA (9th ed.) Citation

Jang, Daniel Y., and Jacob S. Jang. Yes, You Can Speak Korean! Hollym, 2008.