by Paul A. Freund [and others]
Little, Brown, 1966
Buku Teks
McGovney, Dudley O.
The Bobbs-Merrill Company, 1955
Buku Teks
by Paul A. Freund [and others]
Little, Brown, 1961
Buku Teks
by Paul A. Freund [and others]
Little, Brown, 1954
Buku Teks
Wright, Benjamin F., author
Phoenik Books, 1967
Buku Teks