Mund, Vernon A., author
Appleton-Century-Crofts, 1971
Buku Teks
Palmeter, David, author
Cambridge University Press, 2004
Buku Teks
by Robert Cryer ... [and others]
Cambridge University Press, 2010
Buku Teks
by Robert Cryer ... [and others]
Cambridge University Press, 2016
Buku Teks
Mueller, F. W.
McGraw-Hill Book Company, Inc., 1951
Buku Teks