Antonio Penades, "Canal Of Xerxes: Triumph Of Engineering," National Geographic History Magazine (March/April 2023): 20-33.

  Nita Gleimius, "Persepolis: Capital Of The Persian Empire, Seat Of The King Of Kings," The Collector, April 4, 2022.

  Edd Hodsdon, "9 Greatest Cities Of The Persian Empire," The Collector, July 6, 2021.

  Edd Hodsdon, "Darius The Great: 9 Facts About The King Of Kings," The Collector, February 5, 2021.

  Robert C. L. Holmes, "Cyrus The Great: Fascinating Facts And Accomplishments," The Collector, June 15, 2020.