APA (7e ed.) Bronvermelding
Helfferich, T. (2013). The iron princess: Amalia Elisabeth and the Thirty Years War. Harvard University Press.
Chicago (17e ed.) Bronvermelding
Helfferich, Tryntje. The Iron Princess: Amalia Elisabeth and the Thirty Years War. Cambridge ; London: Harvard University Press, 2013.
MLA (9e ed.) Bronvermelding
Helfferich, Tryntje. The Iron Princess: Amalia Elisabeth and the Thirty Years War. Harvard University Press, 2013.
Let op: Deze citaties zijn niet altijd 100% accuraat.