APA Citation

Park, S., Park, S., Irene Christin, & Kim, J. (2009). Why?: Happy math tahun 2. Jakarta: Elex Media Komputindo.

Chicago Style Citation

Park, Sang-Wook, Sung-Hwan Park, Irene Christin, and Ji-Yeon Kim. Why?: Happy Math Tahun 2. Jakarta: Elex Media Komputindo, 2009.

MLA Citation

Park, Sang-Wook, Sung-Hwan Park, Irene Christin, and Ji-Yeon Kim. Why?: Happy Math Tahun 2. Jakarta: Elex Media Komputindo, 2009.

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