APA Citation

Kim, Y., Irene Christin, & Kim, H. (2009). Why?: Happy math tahun 1. Jakarta: Elex Media Komputindo.

Chicago Style Citation

Kim, Yoon-Soo, Irene Christin, and Hong-Sun Kim. Why?: Happy Math Tahun 1. Jakarta: Elex Media Komputindo, 2009.

MLA Citation

Kim, Yoon-Soo, Irene Christin, and Hong-Sun Kim. Why?: Happy Math Tahun 1. Jakarta: Elex Media Komputindo, 2009.

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