Yogyakarta, K, B, S.(2016).Prestasi Achievements: Kesatuan Bangsa School Yogyakarta .Yogyakarta:Kesatuan Bangsa School Yogyakarta.
Gaya MLA
Yogyakarta, Kesatuan, Bangsa, School."Prestasi Achievements: Kesatuan Bangsa School Yogyakarta".Yogyakarta:Kesatuan Bangsa School Yogyakarta,2016.Text.