APA (7th ed.) Citation

Helfferich, T. (2013). The iron princess: Amalia Elisabeth and the Thirty Years War. Harvard University Press.

Chicago Style (17th ed.) Citation

Helfferich, Tryntje. The Iron Princess: Amalia Elisabeth and the Thirty Years War. Cambridge: Harvard University Press, 2013.

MLA (9th ed.) Citation

Helfferich, Tryntje. The Iron Princess: Amalia Elisabeth and the Thirty Years War. Harvard University Press, 2013.