2.7.3. Mengapa Mereka Lebih Maju dari Kita - To Reflect and to Act Gambar 2.7-3: Boedi Dayono – 2004 (2-10) (2-10) https://www.stat.ipb.ac.id/en/uploads/STK493/STK493_10.pdf, 2020-10-21, 11:43 PM 187