Fredericks, Pierce
The great adventure : America in the first world war
E.P. Dutton, 1960
 Buku Teks
Nijhoff, van ostaijen, "de stijl" : modernism in the Netherland and Belgium in the first quarter of the 20th century / edited and introduced by Francis Bulhof
Martinus Nijhoff, 1976
 Buku Teks
Great books of the western world : 30 Francis Bacon
Robert Maynard Hutchins, editor in chief
Encyclopaedia Britannica, Inc., 1952
 Buku Referensi
Overmyer, Grace
America's first Hamlet (John Howard Payne)
New York University Press 1957
 Buku Teks
Great books of the western world : 32 John Milton
Robert Maynard Hutchins, editor in chief
Encyclopaedia Britannica, Inc., 1952
 Buku Referensi