APA-referens (7:e uppl.)

Hillner, J. (2023). Helena Augusta: Mother of the empire. Oxford University Press.

Chicago-referens (17:e uppl.)

Hillner, Julia. Helena Augusta: Mother of the Empire. New York, NY: Oxford University Press, 2023.

MLA-referens (9:e uppl.)

Hillner, Julia. Helena Augusta: Mother of the Empire. Oxford University Press, 2023.