Gressi Anak Rigum. (2011). Characteristic of Gross Pollutants and Evaluation of Gross Pollutant Traps (GPTs) in Perlis. Penerbit Universiti Malaysia Perlis.
Chicago Style (17th ed.) CitationGressi Anak Rigum. Characteristic of Gross Pollutants and Evaluation of Gross Pollutant Traps (GPTs) in Perlis. Kangar, Perlis: Penerbit Universiti Malaysia Perlis, 2011.
MLA (8th ed.) CitationGressi Anak Rigum. Characteristic of Gross Pollutants and Evaluation of Gross Pollutant Traps (GPTs) in Perlis. Penerbit Universiti Malaysia Perlis, 2011.
Warning: These citations may not always be 100% accurate.