-William W. Crosskey, <citetitle>Politics and the Constitution in the History of
-the United States</citetitle> (London: Cambridge University Press, 1953), vol. 1,
-485–86: <quote>extinguish[ing], by plain implication of `the supreme
-Law of the Land,' <emphasis>the perpetual rights which authors had, or
-were supposed by some to have, under the Common Law</emphasis></quote>
-(emphasis added).
+William W. Crosskey, <citetitle>Politics and the Constitution in the
+History of the United States</citetitle> (London: Cambridge University
+Press, 1953), vol. 1, 485–86: <quote>extinguish[ing], by plain
+implication of <quote>the supreme Law of the Land,</quote>
+<emphasis>the perpetual rights which authors had, or were supposed by
+some to have, under the Common Law</emphasis></quote> (emphasis
+added).