PLANER, Ronald J. - STERELNY, Kim. From signal to symbol : the evolution of language. Cambridge, Massachusetts : The MIT Press, 2021. 1 online zdroj. Life and mind: philosophical issues in biology and psychology. Názov z titulnej obrazovky (verzia z 08.06.2023). Available on: https://doi.org/10.7551/mitpress/13906.001.0001. ISBN 9780262366038.