KAYLOR, Michael Matthew.
The Collected Works and Commissioned Biography of Edward Perry Warren, Volume 2. Online. 1st Masaryk University Press. Brno, Czech Republic: Masaryk University Press. 764 s. Volume 2. ISBN 978-80-210-6346-4. Dostupné z: https://dx.doi.org/10.5817/CZ.MUNI.M210-6346-2013