Sugiyanto, C. (2007). PERMINTAAN GULA DI INDONESIA*. Muhammadiyah University Press.
芝加哥风格引文Sugiyanto, Catur. PERMINTAAN GULA DI INDONESIA*. Muhammadiyah University Press, 2007.
MLA引文Sugiyanto, Catur. PERMINTAAN GULA DI INDONESIA*. Muhammadiyah University Press, 2007.
警告：这些引文格式不一定是100％准确.