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Gaya APA

Khoiroh, N. (2013). 100 Soal dan Pembahasan Trigonometri . Yogyakarta: Graha Ilmu.

Gaya MLA

Khoiroh, Novita. "100 Soal dan Pembahasan Trigonometri". Yogyakarta: Graha Ilmu, 2013. Text.