Morrison, John
This freedom
Penguin Books, 1985
 Buku Teks
Galbraith, John Kenneth, 1908-2006
Marketing efficiency in Puerto Rico
Harvard University Press, 1955
 Buku Teks
Gruber, Ruth
Puerto Rico : island of promise
Hill and Wang, 1960
 Buku Teks
Gruber, Ruth
Puerto Rico: island of promise
Hill and Wang, 1960
 Buku Teks
Mccarthy, Cormac
The road
Vintage International, 2006
 Buku Teks