Dallek, Robert, author
Little, Brown & Co., 2003
Buku Teks
Eastman, Max, 1883-1969, author
Farrar Straus and Cudahy, 1942
Buku Teks
edited by Charles Moritz
The H.W. Wilson Company , 1963
Buku Referensi
edited by Anna Rothe
H.W. Wilson, 1950
Buku Referensi
edited by Anna Rothe
H.W. Wilson, 1947
Buku Referensi