Johnson, E. B. (2012). Contextual TEaching and Learning: What it is and Why IT's Here to stay = Contextual Teaching And Learning (CTL) : Menjadikan Kegiatan Belajar Mengajar Mengasyikkan dan Bermakna. Kaifa.
Chicago-tyylinen lähdeviittausJohnson, Elaine B. Contextual TEaching and Learning: What It Is and Why IT's Here to Stay = Contextual Teaching And Learning (CTL) : Menjadikan Kegiatan Belajar Mengajar Mengasyikkan Dan Bermakna. Kaifa, 2012.
MLA-viiteJohnson, Elaine B. Contextual TEaching and Learning: What It Is and Why IT's Here to Stay = Contextual Teaching And Learning (CTL) : Menjadikan Kegiatan Belajar Mengajar Mengasyikkan Dan Bermakna. Kaifa, 2012.
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