Evans, Bergen, 1904-, author
Random House, 1957
Buku Referensi
Chapman, Robert L., author
London Pan Books 1988
Buku Referensi
edited by Jess Stein
Dell Publishing, 1962
Buku Referensi
Charles Scribner's Sons, 1964
Buku Referensi
Adams, James Truslow, author
1946
Buku Referensi