APA Style

Dharma, U, G., Didin, V. (2011). Concentration of Varions Fraction of Nitrogen inOxbow and Backwater Lakes of Central, Kalimantan, Indonesia . Kalimantan Selatan: Poltekes Banjarmasin.

MLA Style

Dharma, Uria, Guna., Didin, Vissia. "Concentration of Varions Fraction of Nitrogen inOxbow and Backwater Lakes of Central, Kalimantan, Indonesia". Kalimantan Selatan: Poltekes Banjarmasin, 2011. Text.