Nielsen, I. (1990). Thermae et balnea. 2 Vol. Viborg
Henry Rushton Fairclough (1942=1929): Horace: Satires, Epistles and Ars Poetica, Loeb Classical Library, London/Cambridge,MA, William Heinemann LTD/Harvard University Press.
Aelian, Various Histories, Book VII, Chapter 8, translated by N. G. Wilson.
Shackleton Bailey, David R. (2004). Cicero’s letters to Atticus Vol. 3 51 – 50 B.C.: 94 – 132 (books V – VII, 9) (Ser. Cabridge Classical Texts and Commentaries). Cambridge
A research website about Archaeology of Ancient Roman Thermalism — and a meeting point for researchers and other people interested in this subject (Red Termal).