Sweeney,Bronwyn. (2011). Mixing colours and shapes: Level 4. PT.Penerbitan pelangi Indonesia.
Chicago Style (17th ed.) CitationSweeney,Bronwyn. Mixing Colours and Shapes: Level 4. Indonesia: PT.Penerbitan pelangi Indonesia, 2011.
MLA (9th ed.) CitationSweeney,Bronwyn. Mixing Colours and Shapes: Level 4. PT.Penerbitan pelangi Indonesia, 2011.
Warning: These citations may not always be 100% accurate.