Cita APA (7a ed.)

Bryce, J. (1961). The Holy Roman Empire. Macmillan & CO.

Cita Chicago Style (17a ed.)

Bryce, James. The Holy Roman Empire. London, [etc.]: Macmillan & CO, 1961.

Cita MLA (9a ed.)

Bryce, James. The Holy Roman Empire. Macmillan & CO, 1961.