The Holy Roman empire
MLA
Bryce, James Bryce. The Holy Roman Empire. A new ed., enl. and rev. throughout, with a chronological table of events and three maps. New York: The Macmillan company, 1932
APA, 7th edition
Bryce, J. Bryce. (1932). The Holy Roman empire. A new ed., enl. and rev. throughout, with a chronological table of events and three maps. New York: The Macmillan company
Chicago, 17th edition
Bryce, James Bryce. The Holy Roman empire. A new ed., enl. and rev. throughout, with a chronological table of events and three maps. New York: The Macmillan company, 1932