Sayre, Wallace S., author
Barnes & Noble, 1964
Buku Teks
Posey, Rollin Bennett, author
Littlefield, Adam, 1958
Buku Teks
by Susan Welch ... [and others]
Thomson, 2006
Buku Teks
McCamy, James L., author
Alfred A. Knopf, 1952
Buku Teks
Bromage, Arthur W.
Appleton-Century-Crofts, 1950
Buku Teks