APA Format
Birch, J. H. S.. (1938).
Denmark in history / by J. H. S. Birch
. London :: John Murray,.
MLA Format
Birch, J. H. S..
Denmark in history / by J. H. S. Birch
. London :: John Murray,, 1938
Chicago Format
Birch, J. H. S.. Denmark in history / by J. H. S. Birch. London :: John Murray,, 1938.