APA (7th ed.) Citation

Wolfram, H., & Kaiser, D. A. (2006). Conrad II, 990-1039: Emperor of three kingdoms. Pennsylvania State University Press.

Chicago Style (17th ed.) Citation

Wolfram, Herwig, and Denise Adele Kaiser. Conrad II, 990-1039: Emperor of Three Kingdoms. University Park, Pa.: Pennsylvania State University Press, 2006.

MLA (9th ed.) Citation

Wolfram, Herwig, and Denise Adele Kaiser. Conrad II, 990-1039: Emperor of Three Kingdoms. Pennsylvania State University Press, 2006.