Everest-Phillips 2006, pp. 258–285 Everest-Phillips, Max (17 July 2006). "Reassessing pre-war Japanese espionage: The Rutland naval spy case and the Japanese intelligence threat before Pearl Harbor". Intelligence and National Security. 21 (2): 258–285. doi:10.1080/02684520600620732. S2CID155070033.
Everest-Phillips 2006, pp. 258–285 Everest-Phillips, Max (17 July 2006). "Reassessing pre-war Japanese espionage: The Rutland naval spy case and the Japanese intelligence threat before Pearl Harbor". Intelligence and National Security. 21 (2): 258–285. doi:10.1080/02684520600620732. S2CID155070033.