Lloyd, Alfred (May 25, 1911). "The Logic of Antithesis". The Journal of Philosophy, Psychology, and Scientific Methods. 8 (11): 281–289. doi:10.2307/2013034. JSTOR2013034.
Lloyd, Alfred (May 25, 1911). "The Logic of Antithesis". The Journal of Philosophy, Psychology, and Scientific Methods. 8 (11): 281–289. doi:10.2307/2013034. JSTOR2013034.