APA-referens (7:e uppl.)

Campbell, C. J., Giovine, A., & Keating, J. (2019). Empty Spaces: Perspectives on emptiness in modern history. University of London Press.

Chicago-referens (17:e uppl.)

Campbell, Courtney J., Allegra Giovine, och Jennifer Keating. Empty Spaces: Perspectives on Emptiness in Modern History. London: University of London Press, 2019.

MLA-referens (9:e uppl.)

Campbell, Courtney J., et al. Empty Spaces: Perspectives on Emptiness in Modern History. University of London Press, 2019.