Gaya APA

gunawan, H., supriatna, A, K. (2013). journal of the indonesia mathematical society (vol.19; no. 2 october 2013). indonesia: indoMS.

Gaya MLA

gunawan, Hendra., supriatna, Asep, K. "journal of the indonesia mathematical society". vol.19; no. 2 october 2013 indonesia: indoMS, 2013. Text.