Hanke, Lewis
D. Van Nostrand Company, 1959
Buku Teks
Mumford, Lewis, author
The literary Guild of America , 1929
Buku Teks
Lewis, Wyndham
Greenwood Press, 1952
Buku Teks
Mumford, Lewis, author
Secker & Warburg, 1964
Buku Teks
Bain, Barbara J., author
Elsevier, 2017
Buku Teks