APA Style

Si, Y, A, A, S. (2010). Workbook Mathematic Grade 1 Semester 2 . Malang: Teaching Traning and Education Development Institute (T2EDI).

MLA Style

Si, Yufita, Aris, Andriani,, S.. "Workbook Mathematic Grade 1 Semester 2". Malang: Teaching Traning and Education Development Institute (T2EDI), 2010. Text.