Kallivretakis, Leonidas. “The King, the Junta and the ‘Impartial Broker’: A Microscopic Approach to the Johnson-Constantine Meeting on 11 September 1967”. The Historical Review/La Revue Historique 14 (April 27, 2018): 211–240. Accessed April 28, 2024. https://ejournals.epublishing.ekt.gr/index.php/historicalReview/article/view/16301.