DOEACC Society. (2001). Quanbook `O` level: Model questions Vol III Business systems...... BPB.
芝加哥风格引文DOEACC Society. Quanbook `O` Level: Model Questions Vol III Business Systems...... New Delhi: BPB, 2001.
MLA引文DOEACC Society. Quanbook `O` Level: Model Questions Vol III Business Systems...... BPB, 2001.
警告：这些引文格式不一定是100％准确.