Catholic Encyclopedia: Cyrenaic School of Philosophy: Overview of this strain of classical thought, by William Turner.
Columbia Encyclopedia: Cyrenaics: Concise paragraph from the 2001 edition.
Internet Encyclopedia of Philosophy: Cyrenaics: Detailed survey of this school of thought, by Tim O'Keefe.
Voula Tsouna, The Epistemology of the Cyrenaic School: A review by Robert Todd of this scholarly work. Published in the Bryn Mawr Classical Review in 1999.