Cita APA (7th ed.)
Robinson, I. S. (1999). Henry IV of Germany, 1056-1106. Cambridge University Press.
Cita Chicago (17th ed.)
Robinson, I. S. Henry IV of Germany, 1056-1106. Cambridge ; New York: Cambridge University Press, 1999.
Cita MLA (9th ed.)
Robinson, I. S. Henry IV of Germany, 1056-1106. Cambridge University Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.