A election to determine the Chief of State was held on 13 June or 14 June 1960, after the result of the policy referendum on 5 June were the majority approved the policies of Norodom Sihanouk, like that the new elected Head of State acquires the powers and prerogatives of a sovereign.http://www.sudd.ch/event.php?lang=en&id=kh011960 Besides that Sihanouk wasn't yet elected as Chief of State.
Aftermath Norodom Sihanouk was elected and took office on 14 June, while he was supposed to be the Chief of State for life,https://www.ebsco.com/research-starters/biography/norodom-sihanouk he was replaced by Cheng Heng on 18 March 1970, after the success of the coup d'état on the same day.
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