Suwatra, W., and A. Suyatna. “BAHAN AJAR ELEKTRONIK GLOBAL WARMING BERBASIS INKUIRI DENGAN PENDEKATAN KETERAMPILAN BERFIKIR KRITIS”. PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL), Vol. 4, Oct. 2015, pp. SNF2015-II, http://103.8.12.212:33180/unj/index.php/prosidingsnf/article/view/4999.