Leach, Richard H., author
W.W. Norton, 1970
Buku Teks
Sayre, Wallace S., author
Barnes & Noble, 1964
Buku Teks
Posey, Rollin Bennett, author
Littlefield, Adam, 1958
Buku Teks
Vance, Stanley C., author
Prentice-Hall, 1955
Buku Teks
Spring, Joel, author
McGraw-Hill, 2008
Buku Teks