Anichkov, E.V. Joachim de Flore et les milieux courtois, 1931.
Enc. Brit. 15 ed. (Joachim of Fiore, sometimes written Joachim of Flora, or Floris)
New Catholic encyc., 1967 v. 7, p. 990 (Joachim of Fiore; d. 1201 or 1202) p. 991 (after Joachim's death, a multitude of works, largely pseudo-prophetical, appeared under his name, making his canon difficult to establish)
Tavard, George H. The contemplative church, c2005 ECIP galley (Joachim di Fiore)