Popper, K. Objective knowledge / Auszug: Karl Popper. Revolutions of the word : intellectual contexts for the study of modern literature.(1997).
Chicago-Zitierstil (17. Ausg.)Popper, Karl. "Objective Knowledge / Auszug: Karl Popper." Revolutions of the Word : Intellectual Contexts for the Study of Modern Literature.(1997) .
MLA-Zitierstil (8. Ausg.)Popper, Karl. "Objective Knowledge / Auszug: Karl Popper." Revolutions of the Word : Intellectual Contexts for the Study of Modern Literature.(1997), .
警告：這些引文格式不一定是100％准確.