Toorn 2016. Toorn, Karel van der (2016). «Ethnicity at Elephantine: Jews, Arameans, Caspians». Tel Aviv: Journal of the Institute of Archaeology of Tel Aviv University. 43 (2): 147–164. doi:10.1080/03344355.2016.1215532
iranicaonline.org
Schmitt 1990, p. 62. Schmitt, Rüdiger (1990). «Caspians». Enciclopédia Irânica Vol. V, Fasc. 1. Nova Iorque: Imprensa da Universidade de Nova Iorque
