Richards, I. (2003). Principles of literary criticism. Routledge.
芝加哥风格引文Richards, I.A. Principles of Literary Criticism. Londan: Routledge, 2003.
MLA引文Richards, I.A. Principles of Literary Criticism. Routledge, 2003.
警告：这些引文格式不一定是100％准确.
APA引文