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Widyantini, Th. and Wibawa, Agus Dwi and Suwaji, Untung Trisna and Hidayat, Fadjar Noer and Danoebroto, Sri Wulandari and Lababa, Arfianti and Rumiati, Rumiati (2019) LIMAS edisi nomor 41 November 2021. LIMAS (41). P4TK Matematika, Sleman, pp. 1-80.

Widyantini, Theresia and Wibawa, Agus Dwi and Suwaji, Untung Trisna and Hidayat, Fadjar Noer and Danoebroto, Sri Wulandari and Lababa, Arfianti and Rumiati, Rumiati (2019) LIMAS edisi Nomor 40 Juli 2019. LIMAS (40). P4TK Matematika, Sleman, pp. 1-88.