Progressive review. [s.n.].
芝加哥风格引文Progressive Review. Manila: [s.n.].
MLA引文Progressive Review. [s.n.].
警告：这些引文格式不一定是100％准确.
APA引文
Progressive review. [s.n.].
芝加哥风格引文Progressive Review. Manila: [s.n.].
MLA引文Progressive Review. [s.n.].