Pratt, Julius W., author
Prentice-Hall, 1950
Buku Teks
Commager, Henry Steele, selector
A Mentor Book, 1948
Buku Teks
penerjemah: Hermoyo, Masri Maris
Yayasan Obor Indonesia, 1994
Buku Teks
Lerner, Max, author
Simon and Schuster, 1957
Buku Teks
United States. Departement of Comerce
Bureau of the Census, 1960
Buku Referensi