by Paul A. Freund [and others]
Little, Brown, 1966
Buku Teks
by Paul A. Freund [and others]
Little, Brown, 1961
Buku Teks
Kauper, Paul G.
Little, Brown, 1971
Buku Teks
Keir, David Lindsay
Oxford University Press, 1948
Buku Teks
Barrett, Edward L.
Foundation Press, 1977
Buku Teks