Sugiyono. (2015). Metode penelitian dan pengembangan (research and development/ R & D). Alfabeta.
芝加哥风格引文Sugiyono. Metode Penelitian Dan Pengembangan (research and Development/ R & D). Alfabeta, 2015.
MLA引文Sugiyono. Metode Penelitian Dan Pengembangan (research and Development/ R & D). Alfabeta, 2015.
警告：这些引文格式不一定是100％准确.