Turner, Ralph
McGraw-Hill, 1941
Buku Teks
Stuart, Gene S.
Washington D.C. National Geographic Society 1988,
Buku Teks
Viorst, Milton
Chilton Book, 1967
Buku Teks SO
edited by Brian Tierney, Donald Kagan and L. Pearce Williams; consulting editor, Eugene Rice
Random House, 1968
Buku Teks SO
Viorst, Milton
Bantam Book, 1965
Buku Teks SO