APA (7th ed.) Citation

Robinson, I. S. (1999). Henry IV of Germany, 1056-1106. University Press.

Chicago Style (17th ed.) Citation

Robinson, Ian S. Henry IV of Germany, 1056-1106. Cambridge: University Press, 1999.

MLA (9th ed.) Citation

Robinson, Ian S. Henry IV of Germany, 1056-1106. University Press, 1999.