«Green Car Congress site». Greencarcongress.com, 03-09-2008. Arxivat de l'original el 2008-12-01. [Consulta: 17 desembre 2010].
greencarreports.com
Halvorson, Bengt. «Hyundai reboots Ioniq as en EV brand, starting with Ioniq 5 crossover in fall 2021». MH Sub 1, LLC, 09-08-2020. Arxivat de l'original el 15 agost 2020. [Consulta: 14 agost 2020]. «Hyundai announced Monday morning in South Korea that a new Ioniq brand will spawn an entire family of fully electric vehicles that will include production models based on the well-received Prophecy sport-sedan concept and retro-styled 45 EV concept.»
Halvorson, Bengt. «Hyundai reboots Ioniq as en EV brand, starting with Ioniq 5 crossover in fall 2021». MH Sub 1, LLC, 09-08-2020. Arxivat de l'original el 15 agost 2020. [Consulta: 14 agost 2020]. «Hyundai announced Monday morning in South Korea that a new Ioniq brand will spawn an entire family of fully electric vehicles that will include production models based on the well-received Prophecy sport-sedan concept and retro-styled 45 EV concept.»