@inbook{Richards+2013+116+134,
url = {https://doi.org/10.7208/9780226059099-005},
title = {5. The Relation of Spencer’s Evolutionary Theory to Darwin’s},
booktitle = {Was Hitler a Darwinian?},
booktitle = {Disputed Questions in the History of Evolutionary Theory},
author = {Robert J. Richards},
publisher = {University of Chicago Press},
address = {Chicago},
pages = {116--134},
doi = {doi:10.7208/9780226059099-005},
isbn = {9780226059099},
year = {2013},
lastchecked = {2026-05-02}
}