Barnett, R (2006). "Education or degeneration: E. Ray Lankester, H. G. Wells and the outline of history". Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences. 37 (2): 203–29. doi:10.1016/j.shpsc.2006.03.002. PMID16769556.
Feuer, Lewis S. (1979). "The friendship of Edwin Ray Lankester and Karl Marx: the last episode in Marx's intellectual evolution". Journal of the History of Ideas. 40 (4): 633–648. doi:10.2307/2709363. JSTOR2709363.
Feuer, Lewis S. (1979). "The friendship of Edwin Ray Lankester and Karl Marx: the last episode in Marx's intellectual evolution". Journal of the History of Ideas. 40 (4): 633–648. doi:10.2307/2709363. JSTOR2709363.
Barnett, R (2006). "Education or degeneration: E. Ray Lankester, H. G. Wells and the outline of history". Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences. 37 (2): 203–29. doi:10.1016/j.shpsc.2006.03.002. PMID16769556.