Dwi, W. P., & Valentina, A. (2007). English On Sky 3 For Junior High School Students Year IX: Berdasarkan Standar Isi 2006. Erlangga.
Chicago Style (17th ed.) CitationDwi, Wahyu Priyanto, and Anna Valentina. English On Sky 3 For Junior High School Students Year IX: Berdasarkan Standar Isi 2006. Erlangga, 2007.
MLA (8th ed.) CitationDwi, Wahyu Priyanto, and Anna Valentina. English On Sky 3 For Junior High School Students Year IX: Berdasarkan Standar Isi 2006. Erlangga, 2007.
Warning: These citations may not always be 100% accurate.