Tim, .(2013).IISTE : International Institute for Science, Technology & Education Volume 3, Nomor 9 Tahun 2013 .Delhi, India:India International for Science & Technology.
Gaya MLA
Tim, ."IISTE : International Institute for Science, Technology & Education Volume 3, Nomor 9 Tahun 2013".Delhi, India:India International for Science & Technology,2013.Text.