LEGROS, Jean-Paul a SARMA, V. A. K. Major soil groups of the world: ecology, genesis, properties and classification. Boca Raton, Fla.: CRC Press, 2013. ISBN 9781466502437. Dostupné také z: https://proxy.k.utb.cz/login?url=https://www.taylorfrancis.com/books/9781466502437.