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