APA (7th ed.) Citation

Cho, Y. (2009). Why ? Fisika. Elex Media.

Chicago Style (17th ed.) Citation

Cho, Young-Sun. Why ? Fisika. Elex Media, 2009.

MLA (8th ed.) Citation

Cho, Young-Sun. Why ? Fisika. Elex Media, 2009.

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