Forster, Edward Morgan, 1879-1970
Vintage Books, 1961
Buku Teks
Venturi, Robert, foreword
MIT Press, 1996
Buku Teks
Donoghue, Emma
Mizan Republika, 2016
Buku Teks
Kirkpatrick, Larry D.
Thomson, Brooks, 2007
Buku Teks
Steyaert, Thomas A.
McGraw-Hill, 1975
Buku Teks