Gaya APA

SAPTUTYNINGSIH, E., MA'RUF, A. (2015). Measuring the impact of urban air pollution : . : Fak Ekonomi UMS.

Gaya MLA

SAPTUTYNINGSIH, Endah., MA'RUF, Ahmad. "Measuring the impact of urban air pollution :". : Fak Ekonomi UMS, 2015. Artikel.