APA-referens (7:e uppl.)
Ryan, M. A. (2011). A kingdom of stargazers: Astrology and authority in the late medieval crown of Aragon. Cornell University Press.
Chicago-referens (17:e uppl.)
Ryan, Michael A. A Kingdom of Stargazers: Astrology and Authority in the Late Medieval Crown of Aragon. Ithaca: Cornell University Press, 2011.
MLA-referens (9:e uppl.)
Ryan, Michael A. A Kingdom of Stargazers: Astrology and Authority in the Late Medieval Crown of Aragon. Cornell University Press, 2011.
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