Fischer, Conan, author
Oxford University Press, 2017
eBooks
Artikel Jurnal
Robbins, Lionel Robbins, Baron, 1898-1984, editor
Macmilan Co., 1936
Buku Teks
Wecter, Dixon, 1906-1950
Macmillan, 1948
Buku Teks
Katz, Meighen, author
Routledge, 2020
Buku Teks