edited by Benjamin B. Hoover, Donald S. Taylor
Holt, 1957
Buku Teks
Blair, Walter
Scott, Foresman and Company, 1949
Buku Teks
Watt, Homer A.
Scott, Foresman, 1932
Buku Teks
Holt, Rinehart and Winston, 1960
Buku Teks
Parlow, Robert B.
Prentice-Hall, 1963
Buku Teks