Off the top of my head:

Michel Chauveau. Cleopatra: Beyond the Myth. David Lorton, trans. Ithaca: Cornell University Press, 2002.

Adrian Goldsworthy. Antony and Cleopatra. New Haven/London: Yale University Press, 2010.

Duane W. Roller. Cleopatra: A Biography (Women in Antiquity). Oxford: Oxford University Press, 2011.

John J. Johnston. “The Rattle of the Sistrum: ‘Othering’ Cleopatra and Egypt in Rome.” in Cyrino, ed. Rome, Season Two (2015). pp. 193-205.

Susan Walker and Peter Higgs. Cleopatra of Egypt: From History to Myth. Princeton: Princeton University Press, 2010.