Lawson, Robert B., author
Routledge & Francis Group, 2018
Buku Teks
Journal of The History of Ideas, Inc, 1961
Majalah, Jurnal, Buletin
Jerzy Swider, Slawomir Kciuk, Maciej Trojnacki, editors
Springer Nature, 2019
eBooks
Singer, Charles, author
Clarendon Press, 1962
Buku Teks
Berlin, Isaiah
Viking Press, 1981
Buku Teks