Cita APA (7a ed.)

Ryan, M. A. (2011). A Kingdom of Stargazers: Astrology and Authority in the Late Medieval Crown of Aragon. Cornell University Press.

Cita Chicago Style (17a ed.)

Ryan, Michael A. A Kingdom of Stargazers: Astrology and Authority in the Late Medieval Crown of Aragon. Ithaca: Cornell University Press, 2011.

Cita MLA (8a ed.)

Ryan, Michael A. A Kingdom of Stargazers: Astrology and Authority in the Late Medieval Crown of Aragon. Cornell University Press, 2011.