Kierzek, John M.
Macmillan, 1951
Buku Teks
Tilbury, Alex, author
Cambridge University Press, 2011
Multimedia
French, F. G., author
Oxford University Press, 1947
Buku Teks
Oxford University Press, 1951
Buku Teks
by Ira E. Aaron ... [and others]
Scott, Foresman and Company, 1983
Buku Teks