Sparta-leonidas-gorgo.com. Retrieved 2011-07-24. ↑ Official Sid Meier's youtube channel video of Gorgo: https://www.youtube.com/watch?v=syS-SFtr-44 ↑ Official Sid Meier's youtube channel video of Pericles: https://www.youtube.com/watch?v=VSCTlpEM9Vw